Hi, Yes, these are mine. They were in an old 19th century album I purchased a couple of years ago. Here are some individual stamp scans.
Really should have them looked at by an expert, as these are known to be counterfeited. Randy
nl1947, Thanks so much for the information. Quite interesting.
How would I go about having them expertized? Through APS or someone else who specializes in China? Any idea of cost? Thanks!