Entire letter fr. with 4x10c 1862 French stamps, underpaid, canc. "5083" and "CONSTANTINOPLE TURQUIE*3.MARS.64" to Athens, handwritten "50" for the missing rate, fr. on arrival with 40l mauve on blue and 10l orange canc. "ΑΘΗΝΑΙ*22.ΦΕΒΡ.64". On reverse Piraeus transit cds. Fine and rare. (Hellas 18b+20Ib).