the pog fad..late 80s into 90s I believe was a completely japaneese invention.It was both a game and a collector hobby.It got pretty popular and everyone was in on making them.Common to have a japaneese motif even if made in mexico.the bigger,heavier ones(often brass)were called slammers.They show up here from time to time.what you have is almost certainly a pog slammer but determining the mfgr.would be daunting without luck and not really provide much insight anyways,largely they have no value unless in original sealed packaging as whole sets.
cool though