1933 National Pumps Corporation advertising mailer for their new model 30 pump. Measures 8-12" x 5-1/2" in folded mailing configuration, largest image area (last pic) is 17" x 22". Can't find another one.

Another pic to show scale better. This, like most of my gas, oil & tool paper, is from the estate of the original recipient and was stored in a hoard from the time it was received (1933) until I cleaned the house out 6 years ago.

Any thoughts on value, comps etc are appreciated.

Lots of looks, but no thoughts on value? I've looked for 6 years and have yet to find another one. I like comps, but I'll take opinions.