I don't think it is a dd, the ear looks a little busy but I don't think anything special. I am not sure what is going on with the mint mark though. It may just be md
I would have to agree that is a great example of RPM-002. Are you familiar with where to look to check the varieties you find? If not coppercoins.com has the largest searchable database with photos and markers for lincon cent varieties. That I know of. You would want to verify your finds here also, if it is not there it might be a new variety.