[BRoberts]

If brown and black Lenoxes are considered two different backs, and if brown Old Mills (in addition to black Old Mills) are considered necessary for a back run, then the idea of excluding a blue Old Mill defies logic. I say this understanding that in our hobby, a card's importance often is understated until that card becomes part of a collection.

There are enough blue Old Mills in existence to warrant them being a legit back.

Obviously just an opinion, and there won't be a consensus reached at this time.