What was first year of Steinway "M" production - more info

[Israel Stein]

>At 11:00 AM 1/28/2007 Gordon Stelter wrote
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>>To: Pianotech List <pianotech at ptg.org>
>>In-Reply-To: <45BCB47B.1010500 at formsmapiano.com>
>>Date: Sun, 28 Jan 2007 07:36:03 -0800 (PST)
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>>Subject: What was first year of Steinway  "M" production?
>>Message: 2
>>
>>.....( and other models, too, if you know).
>>      Thanks!
>>      G

here's more, from another source:

Model B / old style 2

6' 8" - 7 octaves - 1872  (ser #2522)
6' 10 1/2" - 7 octaves - 1884
6' 10 1/2" - 7 1/3 octaves - 1891
6' 11 1/2" - 7 1/3 octaves - 1914
6' 11" - 7 1/3 octaves - 1918

Model B / old style 4

8' 5" - 7 octaves - 1859  (ser # 2485)
8' 6" - 7 1/3 octaves - 1869
8' 9" - 7 1/3 octaves -  1876
8' 10" - 7 1/3 octaves - 1885
8' 11" - 7 1/3 octaves 1915

Correction to my previous post:

First "O" (not "D") experimental model - #96766 - 1900

Israel Stein