I can’t say for sure, but I would assume so. In this thread, there is a picture of a later model on what appears to be a Corfam strap:
https://omegaforums.net/threads/vintage-style-speedmaster-leather-straps.82496/
The ad is in German, but “seewasserfestem” means water resistant, which is exactly what the Corfam strap is.
So it definitely did come on later models than yours.
Thanks for your reply!
Yes, I saw that ad with a 145.022 as well. And that strap looks exactly like mine. But still I wonder if Omega sold those straps with the older 105.012-65 watches. The extract of my Speedmaster doesn't mention a bracelet. It would be great if that Corfam strap would accomplish the period correct assembly of my watch.
Cool museum piece! I have tried older generic Corfam straps that had never been used. They cracked when I inserted the spring bars. Use with care or proudly display as part of your collection.