Additionally I don't see the SM300 getting anywhere near to the level of the Milsub in terms of value or collector interest.
Whilst it's use in terms of service is equal the Rolex has a lot more to offer.
For a start Rolex is pretty much at the top of the tree in terms of vintage watch 'hotness', the watches have tightly defined serial groups, inner caseback markings (so you know your issue number matches the case), verification in many cases from Rolex via Hudson letter (no longer, true, but still), unique ref numbers never for public sale (5513/5517 & 5517) and they have been heavily researched & documented.
Then you get to the watch itself and you have possibly the world's most popular, iconic watch, modified by Rolex themselves (not the MOD) to meet a military contract with a unique look, and reference, and it all adds up to a watch that's easily able to be 'hyped' to command the figures they do.
Click to expand...