US And Foreign Revenue Stamps Used On The Same Document

Combination usages of U.S. and non-U.S. revenue stamps on the same document are tougher to find than one would imagine, especially from the Civil War era. They are something I always keep an eye out for.

Mike Mahler's recent article series in the American Stamp Dealer & Collector magazine on this topic prompted me to hunt through my collection and all my unfiled material and put up a page on my website with the examples I have in my collection, sorted alphabetically by country:

https://revenue-collector.com/foreignusages.shtml

If anyone has examples of U.S. and non-U.S. revenues used on the same document that they are willing to trade or sell, please contact me.

Do covers with US stamps and Foreign Postage Dues count?

Not in this context. I'm talking strictly about revenue stamp usage. Covers with postage stamps of one country and postage due stamps from another country are very much more common, in my opinion.

Vastly more common as a total number of items.