June19 Quiz: How's Your Eye For Detail?

Yes, I know it's June 22, but every time I tried to open this forum on June 19 I got the "Your Connection Is Not Private" error page. So here's the June 19 quiz.
What country/entity issued the stamps with this detail on them?
Two points for the first person to correctly identify it; one point if we need to post an easier version tomorrow.

I'll pluck out South Viet-Nam.

GeoffHa instantly plucked out the right place -- South Viet Nam.
Another quiz next Friday.
VPoints so far:
29 – Vayolene
20 – Johan Buvelot
19 – NigelC
18 –51Studebaker, Stamperix, 22Crows
16 – MaJu
12 – StamperMA
10 -- Canadag
9 – Jogil
7 – Lithograving
6 – Partime, Pnjstamps, Rogdcam
5 – GeoffHa, Rob Roy, Stamps101
4 – Angore, Blaamand, ModernStamps, Wkusau
3 – Tgswanner
2 – Bookbndrbob,Glenn Estus, Noocassel, SCB, SforgCa,Willwood42, Yeapolska
1 – Florian
in search of the Grand High Most Excellent and Most Beloved and Fervently Envied Master of Postal Detail in Our Solar System.

A bit of a lucky hit from the Indo-Chinese possibilities!