1949 UNDERPAID MAIL BISHOPS STORTFORD TO SWITZERLAND. Ennvelope Bishops Stortford to St.Gallen Switzerland with KGVI 2½d light umtramarine (SG489) cancelled BISHOPS STORTFORD 7 FEB 1949, postage underpaid and Swiss 20 postage due cancelled ALTSTATTEN 9.II.49. (Ref 91334).
