If you're near a military base and know someone still on duty, ask them if they can make you a set as a favor to a veteran.
I recall that each installation had a machine that would stamp out dogtags. Or maybe it was just at induction centers. But it's worth an ask.
Newest Project - 51 Chevy 3100 work truck. Photos
#2 - '29 Ford pickup restored from the ground up.
First car '29 Ford Special Coupe
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.