I aquired a few of these from someone digging around a garage after a family member passed. Can't find anything online about these or the company that made them. Just wondering how old they are. I will have to try them out and see if they work but they must have done alright for this person since they had quite a few of them. Says they come in 12 colors but they only had two. The green as shown here and a white one. Look to be kinda old but not sure. Anyone have any info. on these?