You will learn a lot. I don't know anything about the company, but they came in boxes for home use. Dale Seymour has three different box labels shown in an article online. They sell for anywhere between $5-$60 per hundred, that I saw. I have no idea at what price they actually sell. Apparently Pla-M-Wel made a number of types, buy your type, which I believe is wooden, is the most common I was able to find. Maybe you can find more than I did. Maybe Dale Seymour knew something about them.

Michael Siskin