Antique or vintage cast iron book press  Rust is present as noted in photo's.  I chose not to attempt cleaning of this item.  It is marked on the top with a large "12" and below that appears to be Wm. Hoskins Philadelphia, Pa.

The overall approx measurements are 17" long, 11" wide and a little over 12" tall with the press closed.  The book plate is about 10" X 12" and width for book is about 3".  This press weighs 54 pounds unboxed. 

Date of this press is unknown.  It works well, wheel turns easily.  Payment by personal check, money order, and Paypal.  Personal checks will hold shipping until check has cleared.