It's definitely a D/D. I'm a cherry picker and have found a few of this variety. Always fun to find. There are many varieties of RPMs in the 40's and 50's, making them the best years to hunt if you're looking for RPM varieties. Although most of the varieties don't have much of a premium. I generally get $1 for these at my shop.
Thank you for a very informative reply I found this one in a bag of 5000 I would say about 14 years ago I agree that's about the going price for this particular variety