71-72 cab lights

[VTKidder]

I've heard (CPNE) that the U01 option factory marker clearance lights were different through the years, and that 71-72 shared a style that was rounded, not like the teardrop in earlier years. I was wondering if these are a collectable item, or something in demand? The roofline on the 71-72's had (5) raised spots where the lights mounted to, so you just can't use any standard cab light. I have a set of (5) in overall good shape, and am just wondering it they're worth doing anything with. They look like the below.

If they do break or get lost somehow on a truck that came with them, what options are there for replacement? Thanks...

-adam