Tell us, how are the seeds shaped? Is this a pole or a bush bean? Where did you get the seed?

It's likely to be difficult to identify, since there are so many varieties out there. It's been over 25 years since I grew Cranberry pole beans, sold by Gleckers Seeds. But I believe they fit the description as would any cranberry bean.

George
Tahlequah, OK

Below is one of the websites I have used for research. They list several varieties, along with photos. There is some inaccuracies, but it might aid in your search.

Good Luck
Rick

Here is a link that might be useful: Purcell Mountain Farms website