1965 Gas tank colors and textures?

[Bobs 67S]

The sombrero has a surface texture that only mimics a fabric, it has no fiber layer, no fabric content.

It is a complete mastic sheet, like a soft caulk through out. It appears to have been made and the texture pressed to one side only.
Note the areas where the spare tire has left a precise imprint of it's sidewall text. Over time it pressed to that imprint depth, it is that soft.

With abuse it broke off. Nothing held it together.

[Michael Winters]

Few questions;

A) Does anybody knows until when the sombrero was used?
Does this changed with color and texture?
B) When does color/texture changed from smooth light grey to darker and texture?
Was this above 303000?
C) Does anyone has a correct colorcode for the darker grey/textured finishing?
And how was this textured finish done?

Thanks

[John Straub]

I think (emphasis on "think) I have this figured out.. More to come in the next couple of months

Wonderful!!!!!

John

[rmfent]

Couple questions on '65-66 fuel tanks?
1. Color was light grey no texture on top but texture on bottom?
2. Was there anything different on 65-66 vs. 67 and later?
3. 65-66 color was lighter than 67 and later and those had texture on top?
Thanks for comments or opinions and/or pics. I've looked at all pics in this thread and I am still confused.

[John Straub]

My '65 has no texture on the top and bottom. color light gray.

John