Cigar Box and Varnish

[ashauler]

I bought a vintage cigar box today (cedar inside and out) and it will be used as a humidor. I am debating if I should treat yje outside with oil or varnish. I was thinking varnish may help seal in the humidity but I am concerned it may infiltrate the wood and create an issue with how the wood interacts with the moisture. Any thoughts?

If you're planning on having so much humidity inside this box that you're concerned it will leak through the wood......ya got other problems to worry about. Like mrtr said, why the hell would you want to screw up a vintage box anyway?