Yemen
Arab Republic 6-Piece Certified gold & silver "Azzubairi Memorial" Proof Set Ultra Cameo NGC,
1) Riyal - PR65, KM1
2) 2 Riyals - PR66, KM4
3) gold 5 Riyals - PR66, KM-Unl. (prev. KM6), Fr-16
4) gold 10 Riyals - PR65, KM7
5) gold 20 Riyals - PR64, KM9
6) gold 50 Riyals - PR65, KM11a
cf. KM-PS1 (7-coin set). A complete 6-coin set that is apparently unlisted in the Standard Catalog of World Coins, which only lists the 7-piece set also including the 30 Riyals. Sold with mint certificate listing all 6 issues included (COA #0773) and the original case of issue.
https://coins.ha.com/itm/yemen/yemen-arab-republic-6-piece-certified-gold-and-silver-azzubairi-memorial-proof-set-ultra-cameo-ngc-tota/a/3088-33252.s?type=CoinArchives3088
HID02906262019
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Estimate: 5000-6000 USD