1933-M 1C Allen-2.30a RPD, RB MS64RB 认证号85712904, PCGS号516000

The RPD is identified by the doubling of the serif, and the inside of both loops of the 9. Also see the top curve of the 3 - it is doubled on the outside right side. All of these characteristics can be seen in the picture with difficulty due to the dark color of the coin, but knowing where to look will aid in identification. Downloading the blown up full size picture from Coin Facts provides more detail.