I could only add a picture of the foil side of the board, or maybe larger, better quality pictures, next time I disassemble the machine.
My A1000 has never been tinkered with. I've been soldering and looking at PC pads since the late sixties, and can tell you a solder bath junction from a hot air junction from a manually soldered junction. I've also compared part numbers and they are original.
I had glanced at the BBOAH manual on the PAMC1000 briefly and indeed made no mention of hardware modifications. That just adds to the general confusion regarding what appears to be three different models (at least) of this product. BBOAH shows two photos, and a drawing depicting jumper positions, but the drawing isn't about the board on the photos, and the photos don't show jumpers and a KS socket so they couldn't be about the PA-1000 that they say has a socket. A posting above (by mattsoft) specifies that the PA-1000 is different than the AMPA10-R1 that I and tlgrooms have, so we also need pictures of the PA-1000 and PAMC-1000. It's a mess.
If I speculate, I would say the PA-1000 required hardware modifications in order for the socket to function, and that Creative Microsystems later found a workaround for that, but not for the 256K of space to be recovered. That would be a reasonable assumption based on the fact that the easiest a hardware expansion is to install the better it will sell. So, if that BBOAH PAMC manual makes no mention of modifications maybe the PAMC-1000 is very much my AMPA10-R1 except for the BBClock. (Another speculation). And yet another, Kickstart Eliminator is the predecessor to all this, and is still being confused with the newer boards that are also accelerators. What is true is that my card works just as described in my second post.