

Sears sold 
thousands of guitars every year during the 1960s, 
so for one guitar to rise above as the 'most popular,' it really sold a lot. 
Such was the case with the 641/1210, a minimal 'redesign' of the  615.  
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The 641 was built by Harmony, and was nothing but the 
popular 615 with a larger, more 'modern' 
pickguard. A year after its introduction, it became the 1210, as Sears switched 
it (and every acoustic 
Silvertone) from a model number with a '6' prefix to one with a '12' 
prefix. There were a few late-era examples of the 1210 with slight cosmetic and other differences, 
but the 641/1210 carried on the sunburst mid-range acoustic banner into mid-1969, when the 'pumpkin-colored' 1211 took over.
Introduced: 
Fall/Winter 1967 as the 641
Retired:
Spring/Summer 1969 as the 1210
