Would you walk around with a beautiful woman on your arm for ten years and never kiss her? Would you walk around with a beautiful gun and never turn the cylinder, let alone shoot it? For a shooter type of guy, guns are a poor financial investment. Your return will be very small, and you get to look at an object you would rather be shooting while you wait for a price increase that may take decades.
That being said, your revolver sounds like a prime candidate for increasing in value, and in a decade you might come out ahead, especially if you bought it for a song. You have to make the decision of whether to shoot it or not though. I shoot guns that others think I should not. Because of that, I no longer buy new or unfired guns. If you are going to collect for the sake of collecting, do it because that particular gun is fascinating to you, not because you think it might appreciate in value. You will be a lot happier in the long run.