Help To Identify Stamps

hello can someone tell me where are those stamps from;
are they worth something;

I'm not sure, but think that the stamps are from China.

They're all from China except the one on the bottom middle, which is from Japan. I know the Japan stamp is common and basically worthless. I don't have a catalog in front of me for China, but they look familiar enough that I'd guess the value on those is fairly minimal as well, but maybe someone else can chime in on those.

The 1st stamp on top row and the stamp in the middle of the bottom row are from Japan.
The charactor the helps ID stamps of Japan is the one that looks like a modified '8' or like tone rectangel on top of another rectangle!

The others are from China. The Charactor to help ID China is the bisected Rectangle split down the middle!
Three stamps are from the People's Republic the charactor to help with this ID is the inverted smashed 'V'.

The last stamp is from the National Republic prior to 1949!

thank you for your help

i found the icon of the second stamp at the set dove of piece(1950) from china but the value at site max is 2000 my stamp is 2500 maybe a mistake or iam looking wrong;

Check Northeast China, around the vicinity of Sc#1L154

The first stamp is also Japanese. Very hard to read because it's sideways: please turn it 90 degrees to the left. It might be some sort of official letter seal. Not a postage stamp, anyway.

I just made these up a few days ago and they aren't lost in my photobucket just yet, so I might as well add them here for any help they might give to someone:


The chrysanthemum is Imperial Japan, and the figure two over to the right, like a figure 8, is Japan. The chrysanthemum always has 16 petals on genuine stamps; sometimes forgeries vary in the number of petals:




This modified figure 8, where the middle bar does not touch the outer edges, is Japan, but Japan prefecture, which are listed separately:


This sun is Nationalist China. The sun should have 12 rays:


The top left symbol, a rectangle with a vertical slash through it, is China, and the third symbol down is specifically People's Republic:



And the orchid crest is Manchukuo:


For what it might be worth.