This cartridge case was designed around Bitsofthepast's SuperSpartaDOS X cartridge ( https://www.bitsofth...r-spartados-pcb ) The board that your showing me in that link appears to be a fair bit longer, and has buttons on it. I would hazard to say that it would not fit in this case. I could most certainly make one that would work with it, but as with all my designs, I need the cartridge in front of me to ensure a proper fit. That's quite a good adaptation you've got there. I can see that without the pins it would be disappointing.
On mine, I wanted the part of the case with the pins to be replaceable. The pins on mine are very tough as it turns out. You have to apply quite a bit of pressure to snap them off ( I know because I tried! All part of the torture testing).
Are you looking for a replacement case for the cartridge in the link, or the one that I've designed?
One of the weaknesses of the Super SpartaDos with the reset and on/off buttons was that it did not have the shell guide and pins that the original SpartaDOS had. At the time I did not have a workable printable shell to put the pcb into. Some months later I finally was able to design and print a version that had the shell guide, but the pins easily broke, leaving the shell only partially better than no guide at all. It's nice to see COREI64 has been able to solve that particular problem.
But yes there were two different pcbs. One was the complete package pcb with RTC and buttons and shell, the other was a drop in replacement pcb for the original SpartaDOS shell. That version did not have external buttons. They also were different in length and pcb layers.
I have thought several times since then of re-offering the complete package, but that was a collaboration between three people to make it happen. One in Germany, one in Greece and the third in the US. It was fun in some ways, but I don't think anyone of us really wants to do that again. After all we are two or three years older and the parts and shipping are much more expensive than they were then. It really wouldn't make economic sense now.
I could offer the pcb with buttons, if COREI64 would be willing to design and sell a shell for it. But it would not be a single source purchase.