In December 2012, Robert Siegel held a multi-day auction containing, among other things, the collection and exhibit material of the late Steven Belasco. Hidden within that material was a lot containing 10 examples of one of the coolest philatelic items I've ever seen: presumably the first stock certificates ever issued for a U.S. stamp company, issued in 1866.
I bid aggressively on the lot, but ultimately came up the underbidder. I was able to find out who outbid me and contacted them to find out if they were planning to part them out. They were, so I bought one. It cost me considerably more than the pro-rata cost would have been had I won the lot, but since I had no way of knowing what the other party's top bid would have been, and this kept me from having to put out 4+ figures, this is fine by me. There were also 6 more examples in the collection balance lot, but that went for 5 figures... not an option.
This is not only an attractive piece to revenue collectors, with a wonderful multiline printed cancel, but to stamp collectors/historians in general.
From the Belasco exhibit:
Edgar H. Judkins, a Lowell Mass. stamp dealer, began using the name United States Stamp Company in 1865. E.T. Gage was a clerk in Lowell. In 1866 they sold shares in the United States Stamp Company in what may have been the first syndication of a stamp business. At least 100 shares were sold to several different investors. The 5-cent revenue rate applied to shares in an unincorporated company.The example I received is the one shown in his exhibit and in the Siegel auction catalog. All of the certificates in the lot have the same stamp, cancel, and date. Quite a few of the others in the lot have already been sold, but there are a few still remaining. If anyone's interested in one, please contact me off-board, and I'll put you in contact with the seller. They're not cheap, but how often are you going to come across a such a great historical piece?
Are there any stock certificates from other stamp companies? I've never seen any.

