2023 Quiz No. 22: How's Your Eye For Detail?

What country/entity were the stamps with this detail on them issued for?
Two points for the first person to correctly identify it; one point if we need to post an easier version Saturday afternoon.

Russia?

Bulgaria?

ZOWIE! tomonokaazu got it -- Bulgaria!
I'll bet that teeny-tiny flag might have given it away. The other guess was Russia, whose flag is now in the same pattern.
Another quiz next Friday.
Points so far:
56– Vayolene
28 – 22crows
27 -- 51Studebaker
24 – bookbndrbob
21 – NigelC
20 – Canadag, Johan Buvelot
18 – Jogil, MaJu, Stamperix, StevieG
16 – lithograving, pnjstamps, Willwood42
14-- tomonakaazu
13 – GeoffHa
12 – StamperMA9
10 – Mrita75, Stamps 101
9 – Moose, Rob Roy, Zuerich4
8 – Alie, Shermae
7 – StevieG,
6 – Angore, Calstamp, Partime, Rogdcam
4 – Blaamand, CaseyMagoo, hy-brasil, JLLebbert, Linus, ModernStamps, Noocassel,
RXC, Wkusau
3 – Tgswanner
2 –Glenn Estus, Greadan, Kuikka, oldboldandbrash,PMStamp, revenuecollector, SCB,
SforgCa, Tongman65, wayner 11,Yeapolska
1 – Florian, Massimo, Moyock13
in search of the GHMEaMBaFEMoPDiOSS (Grand High Most Excellent and Most Beloved and Fervently Envied Master of Postal Detail in Our Solar System).

Yes, the flag with White on top - and now I remember that I have this exact stamp! I will bring the file out and have a look close this weekend. Have a great weekend.