Tell me about this Spencer

[idahokidwrangle]

Please tell me about this gun. My Dad bought it years ago for $1. The only markings on it are "The 22 Spencer - Patent Applied For" If anyone can tell me more I would appreciate it. If anyone can suggest other places to post or ask about this gun please let me know. My Brother just had the gun refinished for my Dad and Dad was thrilled !!! He is really fond of the old gun. The gunsmith thought that perhaps this was a proto type gun as he hasn't seen any others like it.

Thanks.