I read that the original CC/Performa 250 ran from January '93-May '94 and the CCII/Performa 275 ran from October '93 to November '95 (!) but I haven't seen anything newer than a '93 model in the wild.  Of my own machines, all the Color Classics were early-mid '93 and even my Color Classic II is November '93. 

I figure someone has to have seen/owned one of the machines from '94 and potentially '95, though unless they were dirt cheap I don't know why someone would have picked a CCII/Performa 275 over just about anything else Apple was selling in '95.