[MOVEABLE]. "If now, to win your heart, I fail - I'll know a 'Gremlin' is 'On my Trail'!" U.S.A., [c.1920].
Mechanical Valentine (15 x 20.5cm approx.); showing a boy flying a plane with a 'gremlin' sitting on the tail wing; two-piece card with split-pin allowing the upper portion to be rocked up and down; 'Please be my Valentine!'printed in heart to lower portion; die-cut slit to lower edge allowing the card to be stood upright; a little marginal creasing and perhaps very lightly faded; still a charming survival.
The earliest recorded printed use of the term 'Germlin', denoting a mischievous creature that sabotages aircraft, can be found in a poem published in the journal Aeroplane in Malta on 10 April 1929. However, the slang term first originated in the Royal Air Force earlier in the 1920s among British pilots stationed in Malta, the Middle East, and India.