Not my item just noticed it.
Z horizontal mount.
The Stancor 1952 catalog stated this is a 370-0-370 275mA; 5v CT 3A; 6.3v CT 7A; 9.3 pounds, mounting centers 3 x 3 3/4, base area 3 3/4 x 4 1/2 and height 4 1/4 This item was discontinued in the next catalog.
http://cgi.ebay.com/NOS-Stancor-P-6315- ... 8749842797