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One of Canada’s most recognizable stamp errors will be among the featured offerings when R. Maresch & Son holds its two-day auction Oct. 28–29.
A single five-cent St. Lawrence Seaway inverted-centre stamp, originally part of a block of four, is expected to attract attention alongside early Queen Victoria proofs, a complete Newfoundland pence sheet and a selection of British Commonwealth and worldwide material.
The Aurora, Ont., auction house will present 895 lots in Sale 592, including individual stamps, multiples, errors, varieties and collections. The unreserved auction will be conducted over two sessions, with bidding available online and through traditional absentee methods.
Lot 392 features a mint never-hinged example of Canada’s famous 1959 five-cent St. Lawrence Seaway inverted-centre error (Scott 387a). The error occurred when the stamp’s central design was printed upside down, creating one of the best-known mistakes in modern Canadian philately. The stamp is described as very fine with slightly disturbed gum.
According to the auction house, the individual stamp originated from a block of four documented by a 2024 certificate issued by the Vincent Graves Greene Philatelic Research Foundation.
The Seaway stamp was issued to commemorate the opening of the St. Lawrence Seaway, the major transportation project connecting the Great Lakes with the Atlantic Ocean. More than six decades later, the inverted-centre variety remains one of the most recognizable Canadian stamp errors.
The Canadian section also includes material from the country’s earliest stamp issues.
Lot 134 is a black plate proof of the 12-pence Queen Victoria stamp, bearing a vertical carmine SPECIMEN overprint. Printed on India paper, the proof is described as very fine. Collectors specializing in the Queen Victoria Numeral issue will find Lot 294 of interest. The six-cent brown imperforate pair (Scott 80a) retains original gum, with a thin gum skip noted in its description.
Described as very fine, the pair is accompanied by a 2009 AIEP certificate.
Another Canadian offering, Lot 384, features a mint never-hinged imperforate block of four of the two-cent New Brunswick stamp (Scott 210a). The block is described as very fine. Maresch notes only 45 pairs are known.
Newfoundland collectors will have an opportunity to acquire a complete sheet of 40 five-pence violet-brown stamps (Scott 12A, 12Ai).

A complete sheet of 40 Newfoundland five-pence violet-brown stamps, including seven showing portions of the STACEY watermark, is among the highlights of R. Maresch & Son’s upcoming auction.
Offered as Lot 511, the sheet includes seven stamps showing portions of the STACEY watermark, a distinguishing characteristic of interest to specialists. The sheet has a horizontal fold between the first and second rows, although the stamps are described as never hinged and very fine.
Newfoundland’s early stamps remain a significant collecting field, reflecting the colony’s independent postal history before Confederation in 1949. Complete sheets also offer specialists opportunities to examine production characteristics and varieties across an entire printing.
Beyond Canadian and Newfoundland philately, the auction includes a selection of British Commonwealth and international material.
Lot 644 features a Gibraltar King George V £5 violet and black stamp (Scott 93). The mint never-hinged example is described as very fine and bears a small Georg Bühler guarantee backstamp. The auction house notes the stamp is unpriced in never-hinged condition.
Worldwide offerings include Lot 792, consisting of two decorative souvenir sheets issued by Czechoslovakia in 1934 to commemorate the national anthem. Printed on thick card without gum, as issued, the sheets are described as very fine.
The auction opens Wednesday, Oct. 28, at 10 a.m. Eastern with lots 1–585.
The second session, featuring lots 586–895, begins Thursday, Oct. 29, at the same time.
There will be no floor bidding. Collectors can participate through Stamp Auction Network, while mail, telephone and email bids will also be accepted.
The auction house has also drawn attention to the additional 50-per-cent U.S. tariff affecting philatelic material manufactured in Canada. The distinction is important for American buyers, as the measure concerns the origin of the material rather than simply the country from which it is shipped.
The complete catalogue, lot photographs and bidding information are available through R. Maresch & Son and Stamp Auction Network.
The post Seaway invert, Newfoundland sheet among Maresch auction highlights appeared first on Canadian Stamp News.
A single five-cent St. Lawrence Seaway inverted-centre stamp, originally part of a block of four, is expected to attract attention alongside early Queen Victoria proofs, a complete Newfoundland pence sheet and a selection of British Commonwealth and worldwide material.
The Aurora, Ont., auction house will present 895 lots in Sale 592, including individual stamps, multiples, errors, varieties and collections. The unreserved auction will be conducted over two sessions, with bidding available online and through traditional absentee methods.
Lot 392 features a mint never-hinged example of Canada’s famous 1959 five-cent St. Lawrence Seaway inverted-centre error (Scott 387a). The error occurred when the stamp’s central design was printed upside down, creating one of the best-known mistakes in modern Canadian philately. The stamp is described as very fine with slightly disturbed gum.
According to the auction house, the individual stamp originated from a block of four documented by a 2024 certificate issued by the Vincent Graves Greene Philatelic Research Foundation.
The Seaway stamp was issued to commemorate the opening of the St. Lawrence Seaway, the major transportation project connecting the Great Lakes with the Atlantic Ocean. More than six decades later, the inverted-centre variety remains one of the most recognizable Canadian stamp errors.
The Canadian section also includes material from the country’s earliest stamp issues.
Lot 134 is a black plate proof of the 12-pence Queen Victoria stamp, bearing a vertical carmine SPECIMEN overprint. Printed on India paper, the proof is described as very fine. Collectors specializing in the Queen Victoria Numeral issue will find Lot 294 of interest. The six-cent brown imperforate pair (Scott 80a) retains original gum, with a thin gum skip noted in its description.
Described as very fine, the pair is accompanied by a 2009 AIEP certificate.
Another Canadian offering, Lot 384, features a mint never-hinged imperforate block of four of the two-cent New Brunswick stamp (Scott 210a). The block is described as very fine. Maresch notes only 45 pairs are known.
Newfoundland collectors will have an opportunity to acquire a complete sheet of 40 five-pence violet-brown stamps (Scott 12A, 12Ai).

A complete sheet of 40 Newfoundland five-pence violet-brown stamps, including seven showing portions of the STACEY watermark, is among the highlights of R. Maresch & Son’s upcoming auction.
Offered as Lot 511, the sheet includes seven stamps showing portions of the STACEY watermark, a distinguishing characteristic of interest to specialists. The sheet has a horizontal fold between the first and second rows, although the stamps are described as never hinged and very fine.
Newfoundland’s early stamps remain a significant collecting field, reflecting the colony’s independent postal history before Confederation in 1949. Complete sheets also offer specialists opportunities to examine production characteristics and varieties across an entire printing.
Beyond Canadian and Newfoundland philately, the auction includes a selection of British Commonwealth and international material.
Lot 644 features a Gibraltar King George V £5 violet and black stamp (Scott 93). The mint never-hinged example is described as very fine and bears a small Georg Bühler guarantee backstamp. The auction house notes the stamp is unpriced in never-hinged condition.
Worldwide offerings include Lot 792, consisting of two decorative souvenir sheets issued by Czechoslovakia in 1934 to commemorate the national anthem. Printed on thick card without gum, as issued, the sheets are described as very fine.
The auction opens Wednesday, Oct. 28, at 10 a.m. Eastern with lots 1–585.
The second session, featuring lots 586–895, begins Thursday, Oct. 29, at the same time.
There will be no floor bidding. Collectors can participate through Stamp Auction Network, while mail, telephone and email bids will also be accepted.
The auction house has also drawn attention to the additional 50-per-cent U.S. tariff affecting philatelic material manufactured in Canada. The distinction is important for American buyers, as the measure concerns the origin of the material rather than simply the country from which it is shipped.
The complete catalogue, lot photographs and bidding information are available through R. Maresch & Son and Stamp Auction Network.
The post Seaway invert, Newfoundland sheet among Maresch auction highlights appeared first on Canadian Stamp News.