We have an Eagle Padlock with Key vintage item.  It opens fine with the key (the key has a very slight bend to it).  It measures about 2 5/8" in H x about 1 3/4" across the widest portion x about 3/8" in d.  "Eagle" is written on one side (the writing has a victorian flare - it more than likely is an antique dating somewhere between the early 1900's - 1930's).  It does have some surface rust with the worst of it being on the key. 

Eagle Padlock with Key vintage item