De Nederlandsche Keuringsdienst

Would you like to have a certificate of authenticity made?

The Inspection Service continues to assess the authenticity of stamps, postmarks, letters and postal stationery, etc. from the Netherlands and overseas .

Each object to be assessed is meticulously examined by
Mr. R.A.M. Dresken according to strict criteria.

If the object is found to be in good condition, you will receive a certificate with the Inspection Service's findings, including a color image of the object inspected, printed and certified by the Inspection Service.
The certificate is also stored digitally to prevent any forgery.

The cost of assessing stamps is:
- Certificate for single stamps: €35.00 incl. VAT.
- Certificate for series of more than 7 copies: €50.00 incl. VAT.
- In case of rejection we charge €15.00 incl. VAT per item.
Any costs for registered return shipping will be calculated separately.

We can guarantee that your certificate will be ready within approximately two weeks of receipt of the material to be assessed (unless we indicate in advance that a more extensive examination will be necessary).

The material to be inspected is insured by us while at our office and must always be sent to us by registered mail with a declared value or delivered to the address below:

De Nederlandsche Keuringsdienst (NKD)
Pampuslaan 145
1382 JN Weesp

For more information you can always contact us via
email info@nkdienst.nl or call: 0294-433020