Help With Republic Of China Overprints. Any Chineseexperts?

Hello. Any info on this batch of stamps? There seem to be a few interesting over prints. One looks to have a Peking cancel. Anyone help with info on the over prints? Thanks!

I'm not a China expert, and can only base of my Standard Scott catalogue. From what I can see most are common stamps. I would say that the best way to get more information would be to scan each individual stamp at high resolution front and back. Maybe some one can pick something up. Can point out two stamps as less common. Top row first right - printer's waste. Middle stamp in second row is not in Standard catalogue (or maybe I just can't find it there), possibly a revenue.

Thank you, Danko. I will see if I can take some better pics and research try to research the waste stamp and see if the other is possibly a revenue.

Stamp 1 Martyr of the Revolution Chen Ying Chi. Perf 14 is 1934;anything else is WW2.

Stamps 2,8,9,12,13 Golden Yuan revaluation Oct 1948

Stamps 3,5,6,10 Chinese National Currency overprints 1946-8

Stamp 4 During the liberation of Hong Kong from the Japanese in 1945 the Chung Hwa Book Company Printers were looted and ungummed imperforate sheets were taken. They were never legitimately issued.

Stamp 11 Sun Yat Sen 2nd De La Rue issue mid 1930s

Stamp 7 Sun Yat Sen PO Savings Stamp