Scored this almost new box of powerPC upgrade. The box is distressed and has markers "$10.00" and "Do not open" plus some water stain. But inside is quite nice with books, papers, the PowerPC card and the 610 adapter plus a few dead bugs. The only thing that seems to be missing is the System upgrade disks.

http://i126.photobucket.com/albums/p101/uzumaki_arashi_album/IMG_0417_zpsc6c81ac8.jpg

http://i126.photobucket.com/albums/p101/uzumaki_arashi_album/IMG_0419_zpsc68ad81d.jpg

http://i126.photobucket.com/albums/p101/uzumaki_arashi_album/IMG_0420_zpsc6102635.jpg

http://i126.photobucket.com/albums/p101/uzumaki_arashi_album/IMG_0421_zps066936a8.jpg

http://i126.photobucket.com/albums/p101/uzumaki_arashi_album/IMG_0422_zpsa63f5a86.jpg

I noticed it doesn't mention Centris or Quadra 660 so either 660 came out after the upgrade kit was released, or 660 can't have this upgrade due to AV support.

As far as I can tell, the hardware were never used.  It's like someone bought it or a computer store got it, left it aside for many years forgotten, quite possibly the 7.1.2 upgrade disks were borrowed or stolen, and it finally ends up at the local thrift shop.

The included paperwork are:
Power Macintosh Upgrade Card User Guide

Product Registration (never used)

Warranty info sheet

Software license sheet

packing list sheet

Hardware are:

PowerPC card

610 adapter

hardware bag (rear slot plate, 2 thumb screws, and 3 regular screws)

The packing list does mention 5 disks which is not in the box.