145.017 and 146.017 they have what looks like identical cases. The 145. came with cal.860 and the 146 with ca. 930. It should be the same case since the ref states its basicly the same model without/with date complication. But do they use identical case? i always thought they did, my project will go on a bit longer if the answer is no, but if yes, i'll have myself a nice christmas present!
I'll answer my own question: its a match! (thanks god) Just swappad a 145.017 and 146.017 caseback and they are the same! Anybody need a 145.017 caseback?