This is a Packard #6, 6 1/2" x 6 1/2" outside measurements; 3 1/2" hole. It has time and with the included pin kit, also does instantaneous. The piston side looks factory-fresh. The side that attaches to the board shows a very little bit of wear. These are $200 new and the pin kit is an extra $28 on the #6, so this would be $228 new. This one looks as close as you're probably going to find used and for less than half the price.
$100 shipped in the USA, paypal and USPS money orders ok. $ to APUG if sold here. EMAIL or PM only please