I have the following tupperware box of early 20th century France.
Is there an online source that will help me spot the differances
in the most similar varieties. I have found a few sites that list
what was available by year, but I don't want to buy a Scott or Gibbons
supplement. These will probably go towards an approval book or books.
I do not expect to find any rarities nor highly prized considering
the source that the lot came from.