- Having seen the bases of the two suspected reproduction flasks I would now agree, reproductions.
On flasks of this type you would be looking for pontils something similar to those shown in the
photograph below which are a couple of examples from my own collection.
In respect of the flask you have annotated as 'Bottle 14' it has all the appearances of a late bottle.
I'm not sure you could describe it as a reproduction as I don't think it is actually reproducing any known examples?
Possibly best described as a 'Vintage Style Reproduction'!!
Yeah it's an odd collection, a mix of some beautiful specimins of early American glass, some modern Pier One Imports decorative type stuff, and a couple of near-worthless common liquor bottles. Still, there is a good number of genuine ones there, so assuming you didn't pay a massive amount you likely got your money's worth.
Going through the pictures you've posted so far I'd say: Picture 1 - the little blue one is modern and I think the other two are antiques but not sure what they actually are. Picture 2 - middle flask is likely genuine but not certain, round green one is probably modern, case gin is antique but pretty common. Picture 3 - Too far outside my area of knowledge to say for sure but I'd guess antique. Picture 4 - two on the left are modern, second from right looks interesting but I really don't know what it is, far right is a common UK gin ca. 1910. Picture 5 - Two on the left are very good flasks, second from right is a common post-prohibition bottle, far right I can't see what it is but doesn't look too old. Picture 6 - all but the far right look very good.
The 2 Green flask looked like reproductions to me. SO, I'd have a professional appraiser/Bottle Expert analyze the rest to verify Authentic & not reproductions. Just my ameture opinion, I'm no bottle expert. LEON.
The Metropolitan Museum of Art also commissioned reproduction 3 piece mold items
in the 1970's such as the one shown below from my own collection.
These, however, are easily identified with the embossed MMA mark incorporated into the design.
This is absolutely an amazing resource. I bet if printing technology had remained the same, and graphic design technology had remained the same, and the Internet had not arrived (essentially, if time...