Factory balancer damper, from 1969 383 HP. Fantastic condition. No cracks or rot in the rubber. No wear or rust on the ID (crank surface) the seal hub will NOT catch a fingernail. One of the nicest dampers I've had in a while.  Any questions? Please ask. I have more B RB parts listed and coming.  Shows no signs of ever being hit or abused. It's part way pressed onto one of my personal engines just to keep it out of the way if you'd like more pics I can remove and oblige.