the US army uses lots of crossed weapons for Mos. designation , cannon for artillery , sabers for cavalry, muskets for infantry , flintlock pistols for military police . Crossed beakers of chimerical weapons …………

This raises a good question though . Is there a chance this may not be a makers mark but a issue marking ?
The French used to place a mark to designate weapons headed for sea service , we / USA, if I recall also had issue marking for ordinance