the model was a 4 digit number with a /60 on the end.
oops.. can only be one model, the 6100/60
The absolutely 1st ever PPC model (ever)... very shortly afterwards replaced by the /66 (Mhz)
congrats & oops.... 1ste ever and slowest ever PPC model:
http://www.everymac.com/systems/apple/powermac/stats/powermac_6100_60.html(or one of its variants)
I was the lucky user of a 6100/66 :-) it did beat the crap out of my 486/66
Tom UK