I think I have an old Ampico rotary vacuum pump, but I'm not sure. The only marking is 1337, stamped on top. Any information would be appreciated. Thanks, Steve Robbins [ [ http://www.mmdigest.com/Attachments/15/04/26/150426_140054_IMG_9021.JPG [ [ http://www.mmdigest.com/Attachments/15/04/26/150426_140054_IMG_9024.JPG [ [ http://www.mmdigest.com/Attachments/15/04/26/150426_140054_IMG_9025.JPG [ [ http://www.mmdigest.com/Attachments/15/04/26/150426_140054_IMG_9028.JPG