Does anyone know what type of canteen this is?





It's about 12" tall. Do you think it's copper? I think it dates to between 1930 and 1960 maybe 1970, but can't pinpoint its age more accurately, at least not yet...

This was among all the bottles that I found. Still intact -- I poured water into it and it did not leak. So far did not find anything written or stamped on it. Considering cleaning the rust off but it might damage more than "beautify" so I might end up simply cleaning the iron/steel rust off and leaving the rest alone...