The name of Seebeck is something that many stamp collectors and philatelist recognize at some level. He was a stamp dealer and printer, best known for his stamp-printing contracts with several Latin American countries in the late 19th century producing loads of stamps to collector markets.
Last month I started organizing some of my mint / unused South American duplicates for exchange, and I was not surprised that I ended up with something I believe to be Seebeck reprints. As I have for some time build a “side collection” on “Errors, Freaks and oddities on worldwide stamps” (where I accept both mint and used material) these immediately caught my interest (of not giving them away).
For what I’ve read, the hard part with Seebeck reprints is that there is no easy way to tell apart if the stamps are from the original printing or reprints. Seebeck’s agreement allowed him to use use the original plates for unlimited reprints. For some issues the difference between original and reprint can be told by paper or stamp color, but it’s not a very reliable rule as Seebeck was not very consistent with quality even with the original issues. I asked advice on several forums, and the best answer I got was what I already know – “if it’s unused, then assume a Seebeck reprint”.
According to Michel, the reprints should have thicker paper and a bit brownish color instead of “brick red”. My problem was of course “compared to what” as I don’t have the originals. After some googling I managed to find a sample of collection from David Feldman auctions (Warning: a very large pdf-file) that helped me in determining some details about the original print colors.