
Welcome to Stamp Community Forum, Rod!
Thanks for reposting the larger pics, Steve!
Both are stamps overprinted for use as postal savings stamps. They will not be listed in the standard stamp catalogs.
The bottom stamp (with overprint in an arc) was used in Kiangsi(Jiangxi). The top stamp could have been used in several provinces. The actual province is usually IDed by the font style/size/spacing. Your overprint is too weak for me to distinguish.
Both overprints don't look right. I'm not convinced those overprints are genuine, but I don't collect revenues, so take my statement with a grain of salt.