I know this is a super old post, but did the Clevengers ever reproduce other versions of the Union Clasp? It seems that they only reprod the ones with the compass. The one I have has an iron pontil. To my knowledge the Clevengers didn’t do iron pontils.
Was at an antique store today and saw a Jenny Lind purple bottle. But I know about the Clevengers and it was one of their repros. The bottle otherwise looked completely legit, even had good wear. I took it up to the owner and showed him the difference between a repro Jenny Lind and the legit ones. It had 200 on it. Hope he relables the bottle and changes the price. But I doubt it. The bottle instead of worth 200 is prob worth about 20...
Not a bottle from the Clevenger catalog. I heard the reproduction may have been made in Yugoslavia. Probably since there are several details about the reproduction which don't say "Clevenger". Also, the "ARS" does not appear on the reproduction, only the original from what I've heard. I have the reproduction and my conclusion is yours is an original 1860s bottle because of the embossing. Nice find, a good bottle but not particularly rare.
I have an example of this bottle. It is definitely not Clevenger. But that doesn't mean it's not a reproduction. I've read speclation the bottle was made in Yugoslavia post World War II, maybe 1960s. No evidence the bottle was by the Clevengers. The original had ARS embossed for the glassworks. The reproduction isn't marked.