Most visitors online was 1660 , on 12 Dec 2020
Well, it seems to have been around before 1909. Tran Duy Ly's 3d ed. of his book on Seth Thomas Clocks shoes it from the 1904 catalogue (vol. 1, p. 367, fig. 1201). For all I know, it was around even earlier, but I have no documentation to that effect.Hello,
I incorrectly typed the date; it was introduced 1909, so it is much later than you believed....
Andy Dervan