Dear Terry, these are slik tax revenues from Japan, issued on 1873 and used until about 1877. Very,very interesting items, especially in used condition.
During that period, silk was one of the major export commodity of Japan, and in order to assure its quality (and also to finance the required cost for quality assurance, I suppose), the government proclaimed the regulation for controlling the production of raw silk thread in 1873, putting producers under an obligation to affix a revenue stamp in the shipment of raw silk thread.
Several types of these silk tax revenues were issued, but I assume the ones shown here are for "small skeins" (Ko-Kuri-Maki), which is printed in red on the center of (japanese) native paper strip of approximately 24 x 167mm. So it looks something like a newspaper wrapper. The revenue is used to join two silk skein of approximately 30g each; then the producers' hand chop were put as a sort of seal. The revenues were sold in bundles of 100, and costed 3 sen 5 run per bundle. The characters are read as from right to left, top to bottom, "Oo-kura-sho / Sozei-Ryo", which means "Ministry of Finance / Tax Bureau". No value inscription. The black chops are indeed the names of the producers, which could be possibly read as "Ko-te-??? / Nambu (or Minabe) Jin-taro" (right) and "Sakuma Shigesaku / Tamura Mineji (or Jitsu-ji)" (left). No information on the date.
Unfortunately I couldn't find any good image of the unused ones (I do not possess any of them), so I will attach the images of the relevant pages of the Government Proclamation, No. 32, January 1873 (Meiji 6). The size and usage is shown in the right page of the first image, and the essay is shown in the top of the right page in the second image.
This revenue is not listed in the historical & famous Forbin revenue catalog. They are listed in "Standard Catalogue of the Japanese Revenue Stamps" by Shimomura (several versions, but out of print), and "Japanese Fiscal Stamp Catalogue" by Furuya (2011, available on market), but unfortunately both in Japanese…
I am personally really interested to have closer examination…
Sorry for the rather long post, but I hope this helps your questions.
Regards, unechan (from Osaka, Japan)
P.S. The closeups of the pages are added.

