Crypto Stamp 5.1 Lion — Trilateral Joint Issue

History

On 10 October 2023, Österreichische Post, PostNL, and POST Luxembourg simultaneously emitted the world's first trilateral Crypto Stamp joint edition. After the bilateral CS 4.0 Bull (AT + NL, September 2022) had established the format of international joint editions, the Lion edition was the next logical step in scaling: three rather than two postal services, three national variants of the same motif, one shared release date.

The preparation phase ran for nearly a year. POST Luxembourg, a newcomer to the Crypto Stamp world, joined the established AT + NL tandem. The joint-edition logistics — shared design process, coordinated release dates, aligned security features — became the blueprint for all subsequent multilateral editions.

Designer Competition

Unlike earlier editions designed internally or by Variuscard, the Lion edition emerged from an international designer competition. The contract was awarded to Sandra Smulders of the design studio Vormgoed in Gouda, Netherlands. Smulders had previously designed numerous Dutch postage stamps — among them the PostNL Stamp Day editions 2020 to 2023 and several thematic stamp series.

In interviews, Smulders explained her conceptual approach: "Since there were going to be three crypto stamps, I thought about making the lion look in a different direction for each country. They're insanely cool animals — the lion exudes strength, courage, and authority as the King of the Beasts." Her team discovered the layered design innovation during the design process; it has since become the standard for subsequent Crypto Stamp editions.

Concept: Lion as King of the Beasts

The choice of the lion follows a dual symbolism. In general animal symbolism, the lion has been the emblem of strength, courage, and royalty since antiquity ("King of the Beasts"). On the crypto stamp, this references the self-confidence of a collector community regaining its footing after the 2022 crypto market turbulence ("Crypto Winter").

On a national level, the lion is part of the coat of arms in two of the three participating countries:

• Netherlands: The Golden Lion (Leeuw) has been the central heraldic animal since the 16th century
• Luxembourg: The Red Lion (Lion Rouge) has been part of the Grand Duchy's coat of arms since the 13th century
• Austria: Has no lion in its coat of arms, but the double-headed eagle embodies a comparable power symbol

This gives the Lion edition an additional heraldic layer of meaning in NL and LU that is absent in Austria — a deliberate but differently weighted meaning anchor across each country.

Three Variants, One Set Effect

The three Lion variants differ in national colors, face value, and country-specific details:

A particular design innovation is the hidden set effect: when all three Lion variants are placed side by side, a shared background emerges that is only visible in the trilateral set. Collectors who own all three variants are rewarded with this visual gimmick — a deliberate incentive to complete the entire trilateral collection.

Material and Technology

The Lion edition retains the technical foundation of CS 4.0 Bull and extends it:

Layered Design. The edition's innovation. Smulders and her team discovered that especially rich visual effects can be achieved through superimposed design layers. This multi-layer technique has since become the standard for all follow-on editions — through to CS 5.0 Dragon (2024) with its rainbow-foil effect.

Polygon Sidechain. As with CS 4.0 Bull. Tokens are minted on Ethereum and can be moved via Polygon bridge to the low-fee sidechain, where most collector activity takes place.

NFC + AR. Authentication via NFC chip with 384 bytes AES-SUN NDEF encryption is standard. The Augmented Reality function from CS 4.0 Bull is retained.

Material and Format. Stamps are 43 × 53 mm in size, the stamp block in ISO bank card format. Variuscard in Vienna produces using Invercote Creato matt 240 g/m² paper, PET film for the NFC chip, silver metallic finish, and combined offset and screen printing.

Companion Edition: Crypto Stamp Safe with Morphing

In parallel with the Lion edition, all three postal services issued the Crypto Stamp Safe — a companion stamp with three different symbols (Pacifier, Bottle, Rainbow) that can "morph" with the Lion stamp. Morphing — a one-time, irreversible combination of the Lion NFT with a Safe symbol — transforms the Lion motif:

• Pacifier transforms the lion into a baby lion in neutral color
• Bottle transforms it into a baby lion in the original color (red lion → red baby lion, etc.)
• Rainbow — the rarest variant — transforms it into a rainbow lion, regardless of original color

This morphing functionality is a first in Crypto Stamp history and introduces a playful, almost Pokémon-like collector mechanic. The Crypto Stamp Safe is documented in a separate family page.

Significance

The Lion edition establishes the trilateral joint-edition format, which is further scaled in subsequent editions: CS 5.0 Dragon (2024, quadrilateral with Belgium) and Mythologie 2025 (five to six countries). It also introduces the designer competition as a curatorial model and establishes layered design as a technical-aesthetic norm. The step from two to three postal services may seem incremental, but organizationally it was the decisive turning point — from a bilateral exception to a replicable multilateral standard form.