Hamilton re-tooled it's CLD line in 1953 and replaced many of the original models with new models. Like the original lineup, the new CLD watches were "sealed" with a series of gaskets that included the stem - making them more protected from dust and moisture.
The Lyndon was introduced that year and was manufactured for only two years. These second generation CLD watches were larger than their earlier siblings and the Lyndon is a nice sized watch.
The 10K gold filled case has very interesting stepped lugs that almost look like wings and a bubble back - making it comfortable to wear. Two different dial options were available - either with solid 18K gold numerals with a second track or with numerals and luminous markers and dots (with luminous hands).
The case is often found with wear through on the stepped lugs and on the reverse near the crown. However, good examples are relatively easy to come by. I think the numeral AGN dial is more common than the luminous marker dial shown in the catalog ad above.
I like the Lyndon and enjoy wearing it when it gets it's turn for some wrist time.
UPDATE: January 2016
Here's a luminous version of the Lyndon. It's less common than the AGN version and just as interesting.
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