I collect US military forms of money - tokens, notes, POGs, and chits so I have a soft spot for ancients that are "related" in some way (at least to me). I imagine Celsa was like a VFW - bunch of retirees hanging out, drinking, complaining about how the new guys have it easy (ya I know that's not true...) and the 1/4 calco used as payment between troops makes me think of ancient token.