Help needed Identifying Pint Liquor Bottle, Diamond Cut Edges, Clear Glass, Pint R420
I found an older liquor bottle. It has the "Federal Law Prohibits" embossed on the Front. One Pint on the back. It has machine bottle seams up to the and across the screw top area. The bottom has R420 Embossed, which I believe is a Rectifying Plant Permit Number. It has "PAT APPL'D FOR", date and plant stamp appears to 16-40 and a mold number 3. It was found on a former Nike Missile Base in SE PA. Any help appreciated. There is no glass manufacturers symbol. I'm a rookie, so if I missed anything, please let me know.