Congrats on landing a "Curtis" model!
These are very cool
I love the subtle differences between these two examples.
Was this model always cased in sterling silver, or were there different case metals and case manufacturers?
I assume AGR is the casemaker's mark; who was that? Is there a similar hallmark on your Shock Proof example?
When did they start adding "Helvetia" to the dial? I see they have added the brand to your wristshot example (above); is that a later example?
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