I have Ti Fat Chance #: TF ML 1176 and I was told by Wendyll, who I bought it from directly at the Fat Chance Ranch in late 2001 that it was a "1999" model but that it was built in late 2000 in an effort to use up all of the remaining Fat City frame tubes/bits/materials that Fat City owned but had leftover at the Serotta factory when they went out of biz, so there were a few Ti Fats in that batch as the Ti tubes, drop-outs and other frame parts were custom ordered and designed by Chris Chance and were also very expensive...I was also told that there were a handful, maybe 5 Ti Fat's with those exact disk mounts, so it is a legit Fat Chance but I don't know what year they were made, but it can't have been later than 2000...Hope that helps and please simmer down dudes.