1939 UNDERPAID MAIL ESHER TO MONTE CARLO. Envelope Esher to Monte Carlo, France with KGVI ½d green (SG462) and 1½d red-brown (SG464) cancelled ESHER/SURREY 14 MCH 1939, postage underpaid with "T/20" tax mark and strip of three 60c Monaco postage dues cancelled MONTE CARLO 18 3 39. The 60c Monaco postage dues rare on cover. (Ref 108756).
