I recently got back from PSA my 1977 MSA Cup Lid. It received a grade of VG 3. I wasn't sure if PSA graded these so I was happy to find out that they did.
MSA stands for "Michael Schechter and Associates". Michael Schechter had an MLB players association license to produce trading cards from the mid-1970's until the early 1990's. Most sets from that era without MLB logos on them were very likely produced by MSA. His firm was based out of Florida and after doing a quick search on Google, it appears that someone with the same name has a law firm in Florida today. I wonder if it's the same person or if they're related because there are a bunch of questions I'd love to know the answer to about their business.
Some that come to mind include: "Where did you design and print your cards?", "Do you have a master list including checklists of all your products?" and "Is anybody that worked for MSA still involved in the hobby today?"
Below is an image of the back of the lid. I'm not 100% sure, though I do remember having one or two of these as a kid, but I believe these were lids for drinks at 7/11 though if I'm wrong, please let me know. The coolest part of this particular lid is that the straw hole hasn't been punched through yet.
I have a few more items that I got back recently from PSA and another grading company that I'll post about soon.