Ru-8e Experimental Paper ?

Does this look like the RU-8e version of this stamp?

No, this is RU8b.

are these stamps not in the specialized catalogue. I thought I had seen them in there before

I think the paper is called 'granite paper'.

A lot of issues from Switzerland, to name just one other country, used this type of paper a lot.

Chimo

Bujutsu

This paper is called silk paper and they are listed in the revenue section of the Scott Specialized. Granite paper is a different type of paper, although it does have many fibers as well. The fibers in granite paper are much more "squiggly" for lack of a better word and are usually both red and blue. It also has a lot of fibers, many more than silk paper, which only has blue fibers which usually appear as they do here in this typical example.

Thanks for clearing that up for us revenue.

Chimo

Bujutsu

rev... (know it all)

Hardly. Can't spend 50+ years collecting stamps without learning something. Actually the more I learn the more I realize that I don't know.

Actually, we keep on learning. I will never know all there is to know about philately.

The day we stop learning is the day we die.

Chimo

Bujutsu

just teasing, rev.

Ok so if this is silk paper could it be ru-8e ? it says experimental silk paper.

This is not the experimental silk paper, it is the regular silk paper. Experimental silk paper only has a very few threads and they are all short and straight.
This paper was used for some years at the very end of the Joseph Carpenter contract (Butler had died so it was no longer Butler & Carpenter), during the ABNCO contract, and for a very brief time at the beginning of the BEP printings (depending on exactly which stamps were being printed at that moment).

Thank your wisdom is greatly appreciated.