The first four are Post Office Savings Bank stamps. You won't find them in the catalogues. They've been discussed regularly here.
The last stamp is a $1 RMB surcharge for Kiangsi/Jiangxi Province, issued 5 August 1949. In my ancient Gibbons, it's included under Central China. It had minimum value years ago, but unlikely to have improved much with the passing of time.
You will not find the last surcharge in Scott (at least it is not in my 2009 edition); not even in the Central China section. For some reason, that surcharge from that set is not listed in Scott, even though the other surcharges are. Not sure why there is an omission. In addition to SG, it is also listed in Yang's.
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