The Wards Model 1412A was made by Crosman air guns. It's really a Crosman model 140. It was made between 1954-68 in 4 different Variation's. The Value can be anywhere between $25 to $135 depending on the condition of the rifle. Crosman offers a service to locate repair shops and parts for older rifles and also have (for free) the owners manual and parts manual online.
See the links below