I'd pass. If you want old nickels, you can find them from circulation for $0.05 each. I've got around $150 in pre-'60 nickels now, not including war nicks.
I have got a lot of older (pre 1964) nickels that I have found in my change and roll searching. So I think I would pass.
If you need any specific nickels pre 60, let me know - I have a bunch that I'd be willing to trade ya.