1921, Museum 5 pia. dull violet 1337 handstamped, tied by 'ANGORA' cds. to piece, not cut and very fine. Important rarity of Turkey in Asia issues. Certificates du Vachat BPP (2000) and P. Behr (2009). (Isfila catalogue value 9.000,-€) In PROFI archive no other used ‘Violet Museum’ on piece recorded.
