Identifying Chinese Stamp

Hello all
Hope you can help me out here - couldn't find it in my simplified Scot and SG catalogs.

The upper stamp - to which part of China does it belong? Main China hardly used overprinted stamps.
It will also be great to learn where was the original stamp, without overprint, used.

The lower stamp - "stampworld" doesn't include it, and another source attributes it to NorthEast China. Is that true?

The second issue, is China~ Northeastern Provinces.

Sc#12 1946 5c Lake (No gum as issued)

Thanks, Rod.
The first one too seems like a province stamp, both before and after the overprint.

Don is our "go to" China collector.

I think your first is a Revenue Stamp
(Guess: overprint for Shanghai ?)

Seen described as a "farming machine", I think perhaps it is a tractor, pulling a harvester.

Another guess : Circa 1949

Here is a scan of Revenues from ebay, I downloaded in May 2017,
chasing another issue.

There is a stamp similar to yours in the centre ? surcharged $500

Thank you again.

I combined what you said and got this:
The original stamp without overprint is from 1947 ( ebay)
The stamp that I have "is a PRC-era stamp. The first three characters of the top line of the overprint, reading from the right are 'Renminbi'. The bottom line of the overprint reads 'Restricted to Shanghai'." (stampboard)

What I can't figure out is where they originated from: All PRC stamps, including postage due and official, has a "V" shape letter in their name. My stamp doesn't.

khj responded to your earlier query....

2) People's Republic of China, local Shanghai overprint, revenue stamp surcharged for postal use, I do not see it listed in either Scott nor Yang (it's probably in Yang somewhere, though)
[EDIT: the surcharge may not be postal, but still revenue -- maybe that's why I can't find it in the postage stamp catalogs?)

https://goscf.com/t/52661#52661

Additional pics..
http://www.yscoin.com/index.php?mai...ucts_id=2648

Fabulous.
Thanks for clearing that one up, Perf12.
Saved.

I'm so embarrassed, looks like I've asked this before but failed to find my post before posting again.

Hey, Rob, that's cool,
happens to all of us, one gets a solution, puts the stamp in the album,
gets distracted, there you go.........

Happened to me on 6 or 7 occaisions.

I have tried to solve it, by immediately taking a screen shot of the ID post,
and naming it the same as the stamp in question.