The serial number indicates 1927 as the year it was made. I suggest you contact Greg Bennett at the Chickering Foundation and Bill Schull on the West Coast. There is a table and good discussion about scales on the Chickering Foundation web site. The table goes as far as 1900 and for sure other scales like the 121 Quarter Grand where made. Pictures of the plate stampings would help. For the 121 stamping is embossed in the tuning pin webbing
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James Kelly
Owner- Fur Elise Piano Service
Pawleys Island SC
(843) 325-4357
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