Hi John,Your clock serial number 1481 would date from early 1915. My clock s/n 1455 is dated December 1914.
I just found this thread whilst researching my latest find. I too have an early Gents Pulsynetic and was reading this thread for info on wiring, power consumption etc. Your serial number is also very close to my clock, mine is No 1410 and dated 18th May 1914 on a small paper label RH top of wooden case, case is also numbered 1410.