I have a new unused 69 280 SL throwout bearing. I couldn't use it with my 250 SL bell housing, fork. Make me an offer. I bought a new clutch kit and wanted a diaphram rather than spring pressure plate so I specified a 69. Apparently the ID is smaller, it would not slide over my tranny neck. It also wouldn't fit my fork so I used my old but not very used old bearing. The new ones are not too expensive because they are plastic housing with metal wear strips and integral ball bearing. Interesting hi-tech and much lighter.
Let me know if you want it as another guy responded from Canada.
Gary