Belgian Revenue - Not Sure

Hello everyone.
I guess most of these stamps are Belgian revenues. Does anyone know the date of issue and usage?
Can anyone recommend a site that could have helped me?
Thanks




About the last one, I'm not sure it's Belgian, but the image suggests a railroad parcel.

The last one is from France (no text in dutch)
Parcel post,year 1901,Yvert # 9

The octagonal one is a meter stamp
https://en.wikibooks.org/wiki/Inter...alog/Belgium

4th one (upside down) : half part of a stamp for "taxe de transmission" (transmittal fee)
Most likely from 1923

Believe all but the octagonal one are listed in Barefoot catalogue.

Thank you very much for the help.
As for the 4th stamp, I deliberately placed it upside down so it will be easier to read the cancelation.
Aren't all the 3 stamps in that scan half stamps?

Yes they are.


(Stamps from 1923)

Source: John Barefoot, Benelux Revenues. Various editions.

Believe the first one is "Tax on Receipts" stamp, 1920. Imperf.

Believe the second is a "general tax" stamp (top half). Created (1920) to replace prior application-specific stamps. Perf 11.5 to 14. With and without control numbers.

Third. Bottom half. General fiscal issue.

Fourth. Bottom half (shown upside down), Same "general tax" series.

Thank you, Calstamp and Vayolene, for your valuable info and images. I couldn't have found this on my own.