I've got the same board in my (Proto?) Quadra 605. Mine has the ROM SIMM and the red button.
My serial number is XC336TQS12V. No serial number search can decode that serial, it comes back as being made in 1983. The back FCC label is stamped in and is not a sticker.
Interesting part is that mine has a '040 33MHZ CPU in it.
My serial number is XC336TQS12V. No serial number search can decode that serial, it comes back as being made in 1983. The back FCC label is stamped in and is not a sticker.
Interesting part is that mine has a '040 33MHZ CPU in it.


