Does a seal exist for my factory 1977 c10 sliding window

[77Big10]

I just pulled this seal out of my 1977 C10 Silverado. I'm 95% certain it was the factory because it's so beat-up and had the matching aged chrome lock strip. I've been finding mixed answers on what is the best solution for this fix. I don't have a preference whether it has the Chrome locking strip or not. And if I replace it with a later model OEM sliding window, will that work, too?

 

[TotalyHucked]

I think I see a flat lip on the backside. That style (where there's a flat lip that goes in the gasket and then the glass is in a frame that protrudes out a bit) typically uses the same seal as a solid back glass. Hard to say from those pics, do you have any with it on the truck?

With trim groove:

Back Glass Gasket Seal w/ Trim Groove - 73-91 Chevy GMC C/K Truck

Back Glass Gasket Seal w/ Trim Groove - 73-91 Chevy GMC C/K Truck This rear window seal goes first on the body then the glass is placed in the opening. Tucking in the self locking strip secures the glass in place. Made from ozone resistant EPDM rubber and from the same OE specs as the original...

www.autometaldirect.com

Trim strip:

Chrome Rear Window Gasket Lock Strip w/ Corner Joints - 73-91 Chevy GMC C/K Truck

Introducing the Chrome Rear Window Gasket Lock Strip with Corner Joints, meticulously designed to cater to the 1973-1991 Chevy GMC C/K Truck as well as the rear quarter windows of the Blazer, Jimmy, and Suburban. This unique accessory is an essential component that not only enhances the visual...

www.autometaldirect.com

Without:

Back Glass Gasket Seal w/o Trim Groove - 73-91 Chevy GMC C/K Truck

Back Glass Gasket Seal w/o Trim Groove - 73-91 Chevy GMC C/K Truck This rear window seal goes first on the glass and is installed using the rope-in method. It is a standard black gasket without trim groove. Our product is made from the original specs and from high quality ozone resistant...

www.autometaldirect.com