An extremely rare example of a power station master clock, this Type B model created by Henry Warren in the early 20th century. It was used to precisely regulate the frequency of the power station's generators- which Warren's newly invented, electric…
Produced by Joseph Mayer, Inc. of Seattle, there is little information available about the specific products manufactured by this company. This clock was most likely produced soon after 1920, when Joseph Mayer split off from his two brothers, with…