The first acrylic - Were those the folded ones? I still have some of those. Very dependable holders, but they do flatten two corners after a couple decades. Our area had the originals and after about 6 months someone was making knockoffs that weren't finished as well.
Injection molded in 83? I'm trying to recall which those are. I have a few very old screwdowns some molded some just lexan with screws. I also have one from 82-3? Maybe earlier that was very advanced. It had a cardboard insert that had a nice pattern, and was a screwdown with nylon screws. The dealer I hung out at gave me the sample one he'd been sent. He never did carry them as they were really expensive and hardly any one said they'd buy them.
Steve B
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