20 Đồng

P#69 belongs to the series issued during a period when North Vietnam's monetary infrastructure was under sustained pressure from the American bombing campaigns — the State Bank had relocated critical printing operations underground or to dispersed provincial facilities to protect them. Whether this particular denomination was produced domestically or with assistance from Chinese or Soviet printing houses remains a matter of some debate among specialists, as the series lacks the explicit printer's imprint found on earlier issues.

The 20 Đồng face value sits in an awkward middle denomination that saw relatively high turnover in wartime retail use, which makes genuinely uncirculated survivors harder to find than the less-handled high values.