Need opinion on a Detonics

[comsubin61]

So I have this 1970's Detonics Mark VI " Professional", SS in good conditions. It has the original Pacmeyer grips and also two other wood panell grips. It has slight holster marks from wearing it, but they can easily buffed out. It is an extremely accurate and reliable gun, never jammed or FTE.

Can anyone tell me what the value would be on today's market? And do you think I should keep it as an investiment or does not have real collector value? I have seen prices from $1000 to $ 4000 and can't tell what is the difference there. I also seen someone asking for $ 10,000 for a detonics. Why such a large difference?

This is the original Detonics not the ressurected Detonics.

Thanks for your time.