Reminded me of a post I made on another forum several years ago. I had been interested in the M44 series and went to the library to go through old High Fidelity ads to see its history. Below is a cut-and-paste from that post:
Has any product gone from top-of-the-line to also-ran as quickly as the Shure M44 series cartridge? In looking at older issues of High Fidelity yesterday, I found that the M44 (the first Shure designed to track at 15 degrees) replaced the M33 as top dog in their advertising in the Dec. '63 issue. Priced at $49.50 (.5 mil stylus, .75-1.5 VTF) or $44.50 (.7 mil, 1.5-3.0), it was lauded as "awesome in its vitality and clarity," "a night-and-day difference," and "the new standard in distortion-free hi-fi cartridges." By April of '64, the Shure V-15, with its elliptical stylus, was introduced, relegating the M44 to second-tier status. In September of '64, the M44 was being advertised as the modestly-priced alternative to the "professional grade" M55E and V-15, and the price had dropped to less than $25.00. And now, 40 years later, it's said to be engineered for DJ's and turntablists. But we should not forget that this was once the flagship of the Shure line, an audiophile's dream, even if only for a few months.
Now it's over 50 years since its introduction and still going strong, hopefully for a long time to come.