Sorry to have misrepresented your views Fingers. I've checked some sources myself and may have to strech this to several postings in order not to be timed out.
1. In the Index to the Memphis Appeal, an ad is shown to have run for Schneider & Glassick Gunsmiths on May 19, 1855 page 3; column 5. So this firm had been in business as gunsmiths in Memphis for at least 5 years before the Civil War began.
2. In the Tennessee state gazeteer and business directory for 1860-61, in which the Preface was written buy the publisher John L. Mitchell on March 1, 1860 there are two separate listing for Schneider & Glassick. On page 429 under the listing for Gunsmiths, Schneider & Glassick are listed, and on page 430 under Guns, Pistols, etc. the firm of Schneider & Glassick is listed again.
So, it seems obvious that this company was in the business of making pistols for a minimum of two full years, ie., from no later than March 1, 1860 until whatever date Memphis fell in March 1862. In fact they may have been manufacturing them for a lot longer than that but the March 1, 1860 date is the earliest date that is in print anywhere.
3. A Dec. 8, 1861 article in the Memphis Daily Appeal reads exactly as follows:
"Memphis manufacture. We were yesterday shown by Msesrs:Schneider & Glassick of Jefferson Street, between Front and Main Streets, a six-shooter Navy pistol of their manufacture. The finish of the whole, the accuracy of the parts, and the excellent workings of the mechanism are admirable. Iron, brasswork and woodwork are all specimens of skill. We are proud that memphis can turn out such splendid worksmanship."
Nowhere is it mentioned that this was a prototype revolver. I don't see how anybody can add all this up and come to that conclusion. I take it that the firm had been manufacturing revolvers for two years, without much demand, and then suddenly, the Civil War is looming, and everyone is interested in who's doing what. The operative fact here is this was a general interest article and not an ad. If Schneider & Glassick had been trying to promote a prototype revolver, they'd have had to pay for the ad.
4. Anyfact.com website shows that a Schneider & Glassick revolver was sold at auction in 2005 by the auction house of Wallis & Wallis (Lot 445). It was said to be a composite copy of a .36 Colt Navy. It had a New York USA America address, London proofs, and was stamped on the left side Schneider & Glassick Memphis Tn. Interestingly. its barrel was only 6.25 inches. (The Pietta copy I have has a 7 1/2 inch barrel).
5. American Firearms website says Schneider & Glassick made .41 cal. Deringer type pistols and a .36 cal. percussion Confederate copy of the Colt 1851 Navy, with a production of 50 or less of the latter. "Only number 6, 12, and 23 are known." No source for their claim of a production of less than 50 was given.
6. In a Question and Answer section on a website called Antiqueguns.com a person identified as Tom Lopiano, who was the expert, was asked a question about a Schneider & Glassick pistol that was .36 cal. and had a brass frame STEEL TRIGGERGUARD, and a "shortened Colt barrel" that was marked Schneider & Glassick, Memphis Tennessee. On the left side of the barrel above the wedge was marked B28, with a W inspection mark on the left of the frame. The bottom of the grip was marked 2 Va. Cav. It was mentioned that the rammer was stouter than a Colt. The answer that was given to the questioner was "Regarding the Schneider & Glassick it seems like it may be a 'composite' revolver, but again, I would have to inspect it. A brass frame may denote a Griswold and Gunnison manufacture. The steel triggerguard may come from another imitation Colt or a Colt. The barrel may be a Colt barrel."
Wow, got it all in without being timed out.