Post by lucius1958 on Nov 20, 2020 21:42:23 GMT -5
The BC-34 "Baby Console" was introduced in early 1922, and continued sales up until late 1927, iirc.
The serial number on my early example (with the smaller horn) is 4585. I believe Frow's book on the Diamond Disc Phonographs may have some rough production estimates for certain models; further than that I cannot say. I hope this has been of some use to you.