ball and claw amethyst bottle with spelling error

This is a normal ball and claw amethyst bottle except when you look closer at the lettering on the side. Instead of "ball and claw", the bottle is imprinted with "ball amd claw" with the word and being mispelled. This looks to be a genuine ball and claw bitters bottle to me, just with a misspelling. Could someone please tell me if this is a genuine error or some sort of repro? Also, if it is an error, can you tell me how many are known to exist? The bottle is 8" tall and says "ball amd claw bitters" on BOTH sides of the bottle. On the bottom of the bottle it says "made in taiwan".