I thought it odd also but in an off-list discussion with Wayne, he pointed out that Chuck Schmidt's timeline has it so:
"1973 The last year the Record rear derailleur is available. "
I had assumed from the absence in the 1967 Catalog 15 that it was supplanted at that time by the Nuovo Record.
If so, the NR must have gutted sales of the Record. How else to explain their relative rarity if they were in production for approx. 10 years? Sales may have been largely confined to those distrustful of the durability of a largely alloy unit.
In related news, a kind listmember in California has offered the cosmetically challenged Record derailleur that I have been looking to obtain.
Charlie Young
Honey Brook, Pennsylvania USA
> That's rather surprising; the steel Record rear derailleur was
> manufactured
> as late as 1973?
>
> Ken Freeman
> Ann Arbor, MI USA