Tran Hu’ng Dao was an imperial prince, statesman and military commander during the Tran area in the 13th Century (Wikipedia). A single stamp with a 150D nominal and perforated 12.5 was issued on October 2nd, 1958. Here is the official stamp bulletin that was published by the Vietnamese Stamp Agency on occasion of the release of the stamp.
Here is the mint stamp
Mint block of four (Perf.12.75)
Here is a cancelled to order stamp
Registration Nr. 100130