Hi Val,
In our 53 years of experience, and having literally offered hundreds of thousands of buttons, photos of backs have, with rare exception, not been shown. Neither bidders nor consignors have had any real issue with this, and anytime a back photo was requested we happily supplied them. We will certainly do this for you now with item #723 and moving forward, we will address this issue more.
As for the date of #723, we are going with the extensive research of Dr. Paul M. Muchinsky.
Any inquires, comments or questions can be sent directly to
hakes@hakes.com and we will answer all ASAP.
Thanks,
Hake's Auctions