SLOVENIA
Chainbreakers
,34, 37 (5),
Cover, franked 1,25 Din., sent express - registered from Ljubljana (21. XII. 20) to Bled (Gaber correspondence). The franking is composed of five 20 para stamps - a block of four (!) and a single stamp. Original covers with 20 para are rare (mostly Gaber correspondence), one similar cover with block of four is known. There are few brown stains on cover, relatively insignificant for the extreme rarity