We use ‘up to date’ catalogues and reference books.
Michel, except for the following regions:
The Netherlands and its colonies - NVPH
Belgium and its colonies – OBP
Great Britain and its colonies – Stanley Gibbons
France and its colonies – Yvert
Scandinavia – Facit
Switzerland – Zumstein
USA - Scott
For coins and paper money we have an extensive library.
1382 LX Weesp
+31 (0)294 - 433 020