So not sure about this but I have a vintage bitters bottle I believe was made in the early 1900's according to google but i know is that it is a FROSTED GLASS MADE BY BITTERS AND HAS THE LEATHER WRAPPED ONTO THE TOP (The leather is in still very good condition) but only thing is i do not have the sprout for it. Also the bottom has 5-K-2T8 not sure if that is anything but yeah lmk what yall think pleas.