Unified Vietnam, Landscapes in North Vietnam, February 23rd, 2001, Michel Nr. 3137-3139; Three stamps with nominals of 400D (two stamps) and 10,000D were issued in perforation 13.25.
Here is the mint set in blocks of four
Official First Day Cover
Registered air mail letter sent in July of 2001 from Saigon to Klewitz. The letter carries pairs of the Landscapes in North Vietnam set for an overall postage of 31,600D. Incoming German Post registration receipt on the reverse.
Registration Nr. 107640