This massive 1930's mailer advertising the Sharmeter "Automatic" pump came in the mail measuring 10-1/2" x 7-1/2", and opens to the largest at 21" x 27". Unbelievable condition, complete with attached return mail card for more information. From the estate of the original recipient, stored in a hoard since it was originally received in the mail.
While there may be another of these out there, I haven't found one for sale or sold from 2014 onward, and none exist in library, institution or museum collections according to Worldcat. And, if others do exist, it is unlikely to find another in this pristine condition.
Accordingly, I am asking $560 OBO shipped USPS Priority insured (U.S. only), PayPal f&f preferred. 10% of the sales proceeds will go to OldGas to support this site.
Larger, zoomable photos at https://photos.app.goo.gl/HWrAshqtmoBWkuon9