411 dating

Gaps between the serial numbers I give are ones I’ve not found and documented.

Therefor these gaps in serial numbers could be the years before or after. The first four versions of the 300 called “The Mitchell” at the time did not have the 300/301 model number engraved.

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The serial numbers were stamped on the bottom of the foot at first but between SN A66544 and SN A74901 it was moved to the Housing.

This is when Mitchell realized there wasn’t going to be enough alphanumeric numbers so they changed to just numbers.

The lowest SN I’ve documented is #40779 and the highest is #9963012 and over 900 more serial numbers in between and growing!

The first two versions did not have serial numbers at all and the beginning of the 3rd version also did not have numbers.

Keeping this in mind: – 1946/49 No Serial Numbers but various stamps on foot but in 1949/52 Serial Numbers first begin within the 3rd version release.

Other Classic Egg-Shape models made after 1970 were included in the same serial number sequence.

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