Just a great looking thing. I've had one other of these and will always grab them when I see them because they're just so graphically satisfying--and pretty fun to operate, too. Produced by DF & L with an 1887 patent date; I haven't found out most anything about the company, but believe they were New  England based as that's where these seem to surface. The center dial on this one turns very smoothly to open or close it, and the original baby blue paint, which is much of what makes these so appealing, is strong and bright.

7 1/8" in diameter and in very good condition.