. . . half a second per day phenomenal, especially considering it's 2.5 hz operating frequency. A steel 99.1 or 99.2 is one of the very few watches I'm considering for my own collection, after a G O 1845 Karree and an RGM 222; I really wanted to get a steel 04.0 last year, but the opportunity to land one more G O Karree perpetual got in the way. Congratulations on the Dornblüth, and hopefully it will retain it's miraculous adjustment for a long time to come . . . cordially, Art