Sell or Hold

[Funkymonk30]

All,

I have a V series 3186 Explorer 2 polar dial, brand new still in plastic.I got it for a good price and my thinking was long term investment. I figured the 42mm will come out, they wont make the 40mm anymore and eventually people will start look for the older one.
Anyway I am finding I am not good at keeping watches I dont wear, should I keep it in the safe, or sell now?
Whats' it worth now? what could it be worth in the future?

Thanks in advance, I value the expert opinions on this forum.