It was my assumption then, that these may have been, in fact, of early York construction, although a "De Maer" Cornet has surfaced which does not bear the York name. It then seems reasonable that IF the company was already serializing their products, they must have restarted very close to 1898.They could not have started this run any earlier due to the name change.Determining the date of a York instrument made in Grand Rapids, Michigan is rather problematic because no records are available.Apparently, somewhere during the transfer of the company from Carl Fisher to Tolchin Instruments or the subsequent purchase by Martin Tolchin, the original records were lost, misplaced, or destroyed.The oldest instrument having the High/Low Pitch change loop engraved "pat July 12, 1910" on my information base is a euphonium numbered 24356.They would not know of the actual status change of the patent (and therefore marked "pending") until July 12, 1910, so that any horn so marked should have not been made before the July date.York advertised that "1912 was largest volume year in the 30-year history of the company, but 1913 will be larger" (2) In 1913 came the announcement of the Al-Tru cornet (3), the oldest of which I am aware is numbered 36738.
Swain, I also used these as assumptions: The drop in production for 1915-16 is based on similar drops among the other manufacturers as a result of World War I.The numbering seems consistent beyond this point, so I have chosen to begin this list with the "York & Sons" marked horns. The company, with experienced personnel, is well positioned to have an established run rate as it enters the twentieth century, not only having the main office and factory in Grand Rapid, Michigan, but also a branch office in Chicago (YMJ). Goble as head of a testing department and being responsible for testing each BBb bass, Eb bass, baritone, and slide trombone .In fact, the 1898 edition of York’s Musical Journal contains references to York having built and sold Eb soprano and Bb cornets, band and orchestra horns, baritone and slide trombones, Eb and BBb bass. In 1903 the "Professional" model cornet was announced and put into production (1).This is further compounded by the existence several companies that have used the name "York" since then, including Boosey and Hawkes, the American company Brook Mays and the current manufacturer Schreiber & Keilwerth in Markneukirchen, Germany.Since Carl Fischer chose to outsource some York models and use assemblies from other companies under their control (such as Blessing), trying to make sense of anything not built in Grand Rapids has been compared to trying to herd cats.There is now an expanded information base of over 2,600 York instruments to reference, starting with"York & Son" in 1887 and continuing through several name changes until the Grand Rapids plant was closed in 1971.