Belgium - Many details, such as color differences, hallmark marks, perforations, pre-stamping marks + various

A very interesting collection, including many details:

- keerde pressings
- perforations
- color differences
- precancelations
- overprints, also shifted!
- hallmark or personal note
- TAB (attachment) sometimes above, sometimes below
- original stamps for the specialist
- prepaid/postage pieces
- Railway stamps
- Service or Postage
- various
- etc.

Notes not checked.
Both classical and modern, not in order.
Most used, but also unused/post-fresh material
Nothing checked for types, teeth (perforations), paper types or watermarks, increasing the chance of discoveries.
View the photos for your own impression. Everything is pictured.
Free shipping within the EU!