u/Then-Peanut-3039

I stopped into an antique store, not realizing they were about to close. I grabbed these three lighters for five dollars each before I left, cause I didn’t want to keep them after hours. I thought the brass one in the middle was a trench, art lighter made from ammunition cases, but it is not. There are no markings, but the metal is too thin to have been a shell casing. Does anyone recognize it?