Switzerland Pro Juventute stamps year 1937 Block
The year 1937 is a significant one for Swiss Pro Juventute stamp collecting, as it marks an important philatelic anniversary release in a special format.
The “Block” you are asking about refers to the first official Swiss Souvenir Sheet (or miniature sheet) issued for the Pro Juventute series.
Switzerland 1937 Pro Juventute Anniversary Block
The block was issued to commemorate the 25th Anniversary of the Pro Juventute Stamp Series (which began in 1913).
- Official Name (in Philately): Anniversary Block “25 Years of Pro Juventute Stamps”
- Michel Catalogue: Block 3 (Bl. 3)
- SBK/Zumstein Catalogue: J83I / J84I
Details of the Block:
- Format: It is a small souvenir sheet (or miniature sheet) containing two different stamps within a decorative border and inscriptions.
- Stamps Contained: The block contains the two highest values from the regular 1937 Pro Juventute semi-postal set:
- 20c + 5c (Surcharge for charity)
- 30c + 10c (Surcharge for charity)
- Design: The stamps feature two portraits—a Boy’s Head and a Girl’s Head. The commemorative border often includes the text “25 JAHRE PRO JUVENTUTE-MARKEN” or similar.
- Purpose: The block was a special, limited edition collectible item issued to raise extra funds for the Pro Juventute children’s charity, which is the purpose of all Pro Juventute semi-postal stamps.
This block is highly sought after by collectors, as it marks a milestone in the history of Swiss semi-postal issues and is one of the “classic” Swiss blocks.

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