Copy and paste from my ad on pelican parts forum. I don't post here as often but figure as this is an early car part it was appropriate to post here:

I foolishly bought this not fully understanding the intricacies of the early 911 steering column design. Now I'm an expert but this knowledge didn't come cheap!

I now have a spare $269.00 bearing with no home. New, never used, opened only for measurement then put back in original plastic bag packing.

$200 shipped, paypal only.

Pelican lists them:
87 Coupe - The Driver
78 Backdate - The Project
85 Coupe - The AX Beater