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No idea what is worth though!
circa 1973 to early 1980s: CRL 1452 switches still look basically the same as the previous version, but only one patent number. Definately a Diamond logo during this period. These switches still say "Made in USA" but are actually only assembled in the USA (parts made in Japan).
Does yours have just the one patent number? If so it's the right one.
https://photos.app.goo.gl/sbeprHYn6U271ipn6