Netherlands Indies, 1/10 Guilder silver 1940, proof,NGC PF 66 (NGC Cert # 2766961-013). NGC reports grading no proof or specimen examples, thus this is the first and the finest. PCGS reports grading two proofs -- PR 64, 65. Extremely rarePlease click on the following link to view rotational video clips of the coins https://tinyurl.com/VideoNetherlandsEastIndies