One interesting thing that I've noticed since coming into a few original Aero City panels is that they came with an older style of flat screw-in button that are NOT PS-14-Gs, as PS-14-Gs are snap-in and Seimitsu doesn't make a flat screwbutton. Thing is, the microswitches in them can be either Sanwa SW-68s (the standard in the typical OBSF buttons you see everywhere) or the
smaller Seimitsus. It seems like they came from the factory like that, outfitted entirely with either type, like some were all Sanwa switches and some were all Seimitsu, but always in the same buttons. I believe the buttons are Sanwa's old OBSN screwbuttons, before they changed them to have a convex top, but not sure what the deal is with some having Seimitsu switches:
Here's a picture I found of some lucky asshole's haul of NOS Aero panels and you can see the top and bottom panels have Sanwa switches while the middle has Seimitsus (contacts either in a straight line or offset)
I've also seen this on my own not-so NOS panels as one was outfitted with the Sanwa switches and one with the Seimitsus:
This is way offtopic and sorry for hijacking the sales thread but I've been wanting to bring this up ever since I noticed it and it was a good excuse
