China/Japan Unknown Old Stamps ID

hello

I came across those 4 old stamps from a travel of a relative of mine, can anyone tell me which year are these from and if they have any value?

thank you

The first 3 are from China, your clue is the character that looks like a rectangle with a line down the middle .
The last is Japan, Nippon is the direct English translation of Japan, otherwise the first character that looks like a box with line running laterally from right to left is your other clue.

Not to nit-pick but I believe the first three are "People's Republic of China". Yes, they have value just not great intrinsic value.

Welcome to Stamp Community Forum, cc2!

Using the Scott catalog, from left to right:

China, PRC #J6(1Sep1950)
China, PRC #650(Jan1962) -- your copy is CTO (cancelled to order)
China, PRC #54(1Aug1950)
Japan #1079(1972)

I don't have a current Scott catalog with me, but all these stamps should be low value stamps. However, nice stamps to have in a collection. The PRC #650 has some staining; I would probably keep it separate from the other stamps.