Some of the hardest to come by models are those made in platinum. It's easy to find platinum watches for sale with Hamilton on the dial. In fact, on any given day you can see several for sale on eBay. What makes them hard to come by are a couple of factors. First, the price. Second, often they aren't even legit Hamilton models but simply Hamilton movements with blinged out dials in an aftermarket platinum case. That's especially true for ladies watches but for men's models as well. You have to be very careful with purchasing a men's model in platinum... buyer beware.
There are really only two men's models you'll come across in platinum, although there are a number of rarities out there as well... like a platinum Oval. However, the garden variety, to use the term, would be the 1935 Rutledge and the later 1951 Cambridge.
The Rutledge was a long-running model. It was introduced in 1935 and produced through 1951.
Priced originally at $175, that's the equivalent of over $3800 in today's dollars. It was, by far, Hamilton's most expensive model. That means my wife would surely have liked it.