Imitation Zippos ...

Zippo lighters were the most wanted and commonly carried by GIs during the war.

my guess is that these are artists imaginations of something the COULD have been used then, but during the war years, Zippo used steel rather than brass, then dipped the lighter into a black coating meant to inhibit rust ...

as for them being made in China ... no big deal ... if you like these (or any Zippo for that matter) my recommendation would be to toss the inards away and get a Z-Plus butane insert to replace it ... no smelly lighter fluid, no problematic flints ... just gas it up with readily available butane