Seat Belt Holders on seats instead of console

[mytruck70]

Hey guys, I got a lead on some blazer seats this week and went and got them.
When i got to looking at them I found they where very rare optioned instead of having a console they had seat belt holders on the side made of rubber. My set are blue and look to never have been recovered.

I know they are really rare. However, the hard part is i do not know if the seat belt holders are worth something.

Can someone help me out on pricing? I have owned all most everything on the trucks From speed warning to factory shoulders and never have seen a pair.

Photos to follow.