CRS Disease, or "Can't Remember Squat" (to use the family-friendly version) is usually referred to as a malady of aging, where one's memory starts to go sideways. Frankly, I've been afflicted since about the age of 30, so I doubt it has anything to do with aging.

I've heard the term bandied about since I was a child, but had no idea that the medical diagnosis, and indeed medical specialization, associated with this affliction could be traced back as far as the 19th century. Apparently it has been around since at least 1882, as evidenced by the precanceled block of 4 below. "CRS MD" is clearly a doctor specializing in CRS Disease.

Seriously though, can anyone attribute the cancel? It's clearly a precancel, as all 4 stamps have full original gum, with the top 2 stamps hinged and the bottom 2 never hinged.
