Objects in image: Envelope
Text visible in image: VIETMAMCONGHDA, PHAT-TRIEN, NGU-NGHIEP, 50d, ada/wp, Developpement, de, la, Peche, 10., NOA, DAU, EBUUCHIN, SAIGE, AAT, WETNANP-CONG.HO, CONG, relsie, Premier, Jour, Emission, Nol/DRUTIC, TIEK, 10-1-1972, 10-, FIRST, DAY, ISSUE, SA, CON
Question: what is the number in the round stamp on the envelope?
Answers: 10.1.1972, 10 1 1972, 10.1.1972, 10.1.1972, 50, 10.1.1972, 10-01-1972, 10.1.1972, 10.1.1972, 10.1.1972