British Sumatra, 4 Keping 1804/1219h,(Prid-4A), NGC PF 63 BN "THICK FLAN" (NGC cert # 4692680-002). Pedigree: Purchased from Howard Simmons, London, May / June 1985Please click on the following link to view rotational video clips of the coins https://tinyurl.com/VideoSumatraPlease click on the following link to view more Pridmore pages https://tinyurl.com/PridmoreSumatra