I purchased these new from the USPS in 2002.  New, never hinged, mint condition.  Scott's catalog #3814-3818.  Photos are of the actual sheet you will receive. 

Sheet Measurement:  7 1/8" x 7 3/4"

Questions???   Please ask before purchasing to avoid any misunderstandings.

You can see more stamps (and more) in my eBay store.