Description: China, 500 Yuan, P-283s (S/M#C300-244), Specimen banknote, Black on light blue with SYS at center, red seals and S/N 0000000, back olive green, Face has small archival text on upper right excess margin ?Proof 2 LSF 1A 4-11-45?, Gem Uncirculated or Better. Rare note in high grade. This will be difficult to improve upon. SBNC.