collar taps help needed

[Montgomery Burns]

well I am venturing in to a new field ,,,so let see if I can get some help here.

collar taps ,,,who should be WW1 ..

so far my research go's ,,,I would say earlier but not my field of experience.

its sold as officers Gard pioneer battalion

ehmm what do you think guy's

regards kay

[Montgomery Burns]

k

[Montgomery Burns]

iu

[Dave Mosher]

Not Guard Pioneer: Officer M-1910 2.GFAR and Feldart.-Rgt. Nr. 25 collar tabs