1.40 Kr.

International registered air mail letter to North America (category IIIa) 5 < 10 gr.

Postage rate 40 öre, registered mail fee 50 öre and air mail fee 50 öre

Registered mail label type 5:1, air mail label type 7 and exportation allowed label

Arrival postmark: Boston 07/02/58

01/06/57 - 30/06/62