Hi Paul,
Your questions have been addressed in the whole thread and you may want to read it top down.
However to answer your questions: No markings on action at all. No serial number on action at all. No proof marks. Those answers and other points of discovery are now attributing the rifle to G&H. G&H serial numbered their guns on the barrel and the barrel on this rifle is not original. The G&H barrel lost to time. Also no proof marks because we don't proof mark guns in the USA.
Back in the early 1900's G&H bought these actions, most likely from Francotta, and barreled and stocked them for sale to their customers.
If you read the whole thread you will learn even more.