Lot 51090 – 1924 (May 30) Envelope to Denmark with “By Air Mail” label with late usage of the QV 1892 4 1/2d red & green

1924 (May 30) Envelope to Denmark with “By Air Mail” label with very late usage QV 1892 4 1/2d red & green, invalid for postage and highlighted with blue crayon and struck with “INSUFFICIENTLY PAID FOR / TRANSMISSION BY AIR MAIL” cahcet on both sides, and on arrival in Copenhagen franked with strip of four 20ö postage dues, very fine and attractive