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I am at present restoring one with what looks to be the same chassis. The Sams is 1954. I was kind of lucky with this one as someone had already replaced the electrolytics and had replaced many of the original caps with t orange drops.
I have just finished restoring a couple of these from 1953, the MARK V chassis. The 1953 MARK V models had a better chassis, with a 5u4 rectifier,(54 has Seleniums), an actual limiter stage in the sound system(missing on the 54 model), and 4 if stages(3 in 1954). As I am connecting the 53 model to a DTV converter box, the no. of IF stages is of no consequence. However, the limiter makes for much less buzz in the sound.
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