Third stamp is Germany Scott # 575 issued 1947
First stamp Brazil depending on the value is either 519 or 544 I can't
see the amount issued either in 1941 or 1942
Hi The Brazilian definitive stamp was issued with different watermarks, and, in a lot of cases, the watermark will determine the value. Some are easy to see, but some are not.
For the most part, the Scott's Catalogue will list the numbers for the different sets issued with the same design, but regardless of this, you will have to check the watermark.
This is about the best help I can give on this. The German stamp you have shown is Scott # 575. In MNH condition it has a CV of only 25 cents and $1.10 (in my edition). In the Michel Katalog it is #960.
The Chile stamp is either Scott# C36 or C96. C36 is watermarked. C96 is Unwatermarked.
C36 is violet black and C96 is slate violet. Both are minimal value.