Circular, 27 mm
Colour: Violet
Items known:
26.3.1964 Stockholm Ban Utr to Brooklyn, NY (US), violet
1965 Saltsjöbaden to US, violet
11.1965 Tumba to Manila (Philippines), violet
26.3.1964 Aerogramme to USA. Correct rate 50 öre. Shortpaid 50 öre Amount due 2x50/1.70=59 centimes. No fee seems to have been charged in USA.