unity
Well-known member
MJ313 and I have been discussing this one, we have not come to a definite conclusion on this and maybe never will without some conclusive evidence that is not just specualtion. Conclusion being what it is. Pre-production? Demo unit? Internal demo? Upgrade kit?
Oddities:
- Only says "Macintosh Performa" on the front. No model variation after. Its very obvious that nothing was removed either upon close inspection. I took a shot and processed it to bring out details, etc. Its below. If for some reason the variation number was removed, it was done in a very careful way to not scuff, dull the surface at all. I am confident in saying it was never stamped.
- The "Performa 475" label is printed on stock Apple serial label - notice the "M" in the lower left. Upgrade kits had a proper decal for the front (images can be found online of that).
- The motherboard appears to be early regular production with a ROM slot installed. The ROM slot is normally not found. The PRAM reset button was removed from production runs at some point. The word "PRIMUS" is found on the serial mobo label, but again this can be found on regular production runs. Not sure if they all said PRIMUS, but I found a few examples. So besides the ROM slot, the board is not super unusual.
- ROMs have labels. Of the early run boards I did hunt down, none had labels. Notice the S in the part number where it should be a space or hyphen.
- That Performa label stuck on is odd in the sense that Performa is really just a software package.
- You had the LC 475, Performa 475 and Quadra 605 based on this same board. The upgrade kit Apple offered was an "LC 475 Upgrade", not a Performa or Quadra upgrade kit.
- Production date puts it around 3 months prior to the October release of the Performa , LC 475 and Quadra 605.
- The FCC label is not cover up another (which could indicate an upgrade was done)
Most serials I have seen include EVT/DVT/PVT. This one does say PT but that may be a stretch. I dont have other units of this time to compare serial to and Apple was never good at using the same serial setup by this time. But any input on that may help. I have run across only one other 475 like this in my searches but the pic is not high resolution. http://myplace.frontier.com/~kadaggett/StackOMacs/other68k.html- That same image was discussed here in one old post.
So what do you think?
Oddities:
- Only says "Macintosh Performa" on the front. No model variation after. Its very obvious that nothing was removed either upon close inspection. I took a shot and processed it to bring out details, etc. Its below. If for some reason the variation number was removed, it was done in a very careful way to not scuff, dull the surface at all. I am confident in saying it was never stamped.
- The "Performa 475" label is printed on stock Apple serial label - notice the "M" in the lower left. Upgrade kits had a proper decal for the front (images can be found online of that).
- The motherboard appears to be early regular production with a ROM slot installed. The ROM slot is normally not found. The PRAM reset button was removed from production runs at some point. The word "PRIMUS" is found on the serial mobo label, but again this can be found on regular production runs. Not sure if they all said PRIMUS, but I found a few examples. So besides the ROM slot, the board is not super unusual.
- ROMs have labels. Of the early run boards I did hunt down, none had labels. Notice the S in the part number where it should be a space or hyphen.
- That Performa label stuck on is odd in the sense that Performa is really just a software package.
- You had the LC 475, Performa 475 and Quadra 605 based on this same board. The upgrade kit Apple offered was an "LC 475 Upgrade", not a Performa or Quadra upgrade kit.
- Production date puts it around 3 months prior to the October release of the Performa , LC 475 and Quadra 605.
- The FCC label is not cover up another (which could indicate an upgrade was done)
Most serials I have seen include EVT/DVT/PVT. This one does say PT but that may be a stretch. I dont have other units of this time to compare serial to and Apple was never good at using the same serial setup by this time. But any input on that may help. I have run across only one other 475 like this in my searches but the pic is not high resolution. http://myplace.frontier.com/~kadaggett/StackOMacs/other68k.html- That same image was discussed here in one old post.
So what do you think?