Victor 800 vs. Victor 800C Head Gasket Question

[1930-Pickup]

Hi everyone. This is my first post here on The Barn.

I recently picked up a couple of NOS Victor 800 head gaskets. They are of course the copper-clad asbestos-core type of gaskets.

I did a search here on The Barn and found that "800 C" gaskets were mentioned a couple of times, but I couldn't find a reference to "800" (no C).

The gaskets I picked up are clearly factory engraved with "Victor 800" and not "Victor 800 C". My question is, is there a difference between the "800" and "800 C" gaskets?