Yemen, 1947 AD., al-Nasir Ahmad bin Yahya, Sana'a mint, Buqsha, KM Y 12.1.
Yemen, Kingdom, al-Nasir Ahmad bin Yahya (Imam Ahmad, AH 1367-1382 / 1948-1962 AD.), Sana'a mint, dated AH 1372 (1953 AD.),
1 Buqsha (1/40 Riyal) (ø 27 mm / 6,75 g), copper or red bronze, ca. 6,8 g theor. mint weight, mintage ? , medal alignment ↑↑ (0°), plain edge,
Obv.: ... / ١٣٦٨ / ... , Arabic text, crescent below accession date ١٣٦٨ (AH 1367).
Rev.: ... / ١٣٧٢ // ... , "Sana" above date AH 1372 in circle, eight stars and large "Sana'a" in border legend.
KM Y 12.1 .
several varieties exist:
KM Y 12.1 rev.-legend: "Sana" above date and large "Sana" in border legend, varieties in size of planchet and weight.
KM Y 12.2 rev.-legend: small "Sana'a" in border legend, varieties of arrangement of legends, form of crescent, and size of circle
KM Y 12.3 rev.-legend large "Sana" in legend, without "Sana" above date.
(KM Y 12a.1 and - 12a.2 : aluminium flan)