Doug,
I believe that Crown was just a name used by New York Standard on watches that were intended to be some of their "better" models. They're about equal in overall quality to Ingersoll Reliance watches, and except for the shape of their bridges, their parts are interchangeable with other regular NYS movements of the same size.
As for the similarity between the Howard Series 11 "Railroad Chronometers" and the NYS models, however, I think you actually have the "imitation" idea backwards. Of course, the Keystone Watch Case Company owned NYS at the same time it owned the E. Howard Watch Company, and at some point, the management team realized that sales of their Howard railroad watches were suffering because they were not competitively priced. In their quest for a solution to this problem, they began searching for ways to reduce production costs, and the result was the Howard Series 11 "Railroad Chronometer," which was designed like contemporary NYS 3/4 plate models.
For those not familiar with the Series #11 "Railroad Chronometers," they're intended to look like regular 3/4 plate movements, but they're actually constructed more like full plate ones. Instead of their bridges being machined from thick solid brass or nickel stock, they're made from thin (flimsy) plates that are supported by pillars permanently attached to the main (pillar) plates. Essentially, the Series #11 is a mirror image copy of the 16s New York Standard "grade 175" movement, which also looks a great deal like the 16s "grade 174," the 12s "grade 172" and "173," and the 10s "grade 9175" and "9176" models.
Today, the Series #11 "Railroad Chronometers" seem to be highly desirable, but they're really the most cheaply made abominations ever produced by a company whose other products included some truly fine watches. The series 0, 1, 5, 10, and every other railroad model ever produced by the E. Howard Watch Company, were infinitely more nicely made and finished.
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Steve Maddox
VP, NAWCC Chapter #62
North Little Rock, Arkansas