Gmt 1675

[jctrolex]

I have posted this in the general discussion section but I thought I should post it here too to get some opinions from the experts.
I just saw a 1978 GMT 1675 on Hodinkee this morning for sale at $28,000 and it was sold as soon as it hit the internet. It seems the price for these gets crazier each time one comes up for sale. One could buy a 1675 for less than $4k 10 years ago. I know its all about condition and certain dial and all that but the prices still seems pretty crazy in general. I am just wondering if this is just a big bubble ready to be burst when people come to their senses. After all Rolex made a ton of these back in the days when they were selling them for under $300 in PXs around the world so they really are not that rare.
As you can see on my Avatar I have a 1675 and I am wondering if I should cash in on this craziness or just hold on to it for my son. I don't need the money and I love the watch but it has come to the point that I am almost too afraid to wear it because of its perceived value.