NL crypto stamp 4 – Hermes
PostNL issued the NL crypto stamp 4 – Hermes on September 18, 2025, in an edition of 15.000 pieces. The new crypto stamp was released in collaboration with other national postal companies in Europe. For previous issues, PostNL had already partnered with the postal companies of Austria, Luxembourg, and Belgium. Portugal has since also joined this collaboration for crypto stamps.
As with the previous issues, the latest NL crypto stamp 4 – Hermes features the value designation R for domestic registered mail up to and including 20 grams.
Verify authenticity. Activate the NFC function on your smartphone. Hold your phone near the NL crypto stamp 4 – Hermes to verify authenticity. The validity period is indefinite. The NL crypto stamp 4 – Hermes bears the value indication R, intended for franked mail up to and including 20 grams with a destination within the Netherlands. The Austrian stamp bears the value indication € 9,90 for letterbox parcels in Europe. The Luxembourg stamp bears the value indication € 9,00 for parcels up to and including 10 kg within Luxembourg. The Belgian stamp bears the value indication 3 World of € 9,00 for mail up to and including 100 grams with international destinations. The Portuguese stamp bears the value indication of € 9,90, to be used, among others, for mail up to and including 500 grams with international destinations. Click here to view or order the Dutch Crypto stamps via Freestampcatalogue, or here for Crypto stamps from all countries.
Technical data:
Stamp size: 43 x 53 mm Stamp sheet size: 53,98 x 85,60 x 0,9 mm (+/- 0,05 mm) Paper: Invercote Creato matte 240 g/m² Special features: PET film for NFC chip, hologram metallic film and varnish NFC chip 384 bytes, AES-SUN NDEF security Gumming: gummed Printing technique: offset and screen printing Printing colors: cyan, magenta, yellow and black Edition: 15.000 crypto stamps Format: stamp sheet with 1 stamp Design: Lisa Filzi of Frau Filzi – Kreativstudio, Aigen (Austria) Printer: Variuscard GmbH, Vienna (Austria) 
Does anyone know of a marketplace, other than http://www.opensea.io , where I can buy the NFTs of these crypto stamps?
“for franked mail up to and including 20 grams with a destination within the Netherlands” Probably means: “Registered mail”.
'@Stampblog
There are quite a lot of errors in this message, particularly in the tariff information for the crypto stamps. You are not required to provide that information as Postzegelblog, but if you write something about it, I would like to see that it is correct, as can be verified on the websites of the relevant postal organizations.
What I found on the websites of the respective postal companies:
For NL:
The Hermes stamp has a value of R and is sold for 11,80 euros.
That rate can be found for registered domestic mail weighing up to 2 kg that is franked at a PostNL point or presented franked at a PostNL point.
For Austria (AU):
The rate of 9,90 euros shown on the Zeus and Hera stamps is intended for an XL letter sent from AU to Europe via the ECO method. XL format means that length + width + height may not exceed 900 mm and must not be thicker than 500 mm. ECO means without priority.
Other rates of 9,90 euros do not currently exist in AU.
For Luxembourg:
The rate of 10,30 euros on the Artemis stamp is intended for a registered domestic letter of M-format weighing a maximum of 2 kg. M-format is a maximum of 340 mm x 250 mm x 30 mm. The rate is composed: 4,80 for the domestic M-format letter and 5,50 for registration.
For Belgium:
The Athens stamp at the WORLD-3 rate costs 9,36 euros for a single stamp, or 9,00 euros each starting from two stamps.
WORLD-3 is suitable for a “non-standardized” letter up to 100 grams to non-European countries.
By a standardized letter, the Belgian Post understands: a rectangular letter of at least 90mm x 140mm, at most 125mm x 235 mm, at most 5 mm thick, and weighing at most 50 grams.
For Portugal, I have not been able to ascertain whether 9,90 euros indeed applies to an international letter of up to 500 grams.