Help me identify this Winchester model 12

I was from my father after he passed and I am having a hard time figuring out what it is. the serial number on the reciever is 1707986 putting it as a 1959 the serial number on the barrel matched but there is a extra 0 for some reason and between the two serial numbers is a small stamp that looks like crosshairs on a scope.. The barrel is a 30" vent ribbed full choke but the rib extends down to the end of the receiver almost where the stock meets the receiver. the biggest mystery is the wood, it's a very light blonde monte carlo style stock. I know the recoil pad was added on by my father

 

looks like custom bishop wood with an extended forearm and rollover stock, possibly birds-eye maple with a sunwood blonde finish.
id like to see that extra 0 you mentioned. it sounds like a winchester pw proof mark.

 

It has an after market rib on it, probably a 12 that was a field gun. bobski is right about the wood from what I can see in the picture. I would need a picture of the SS #. The cross hairs could be an X that ment the gun had been sent back to the factory at some time in it's life.

 

It looks like it may be a Herters after market rib. I have a similar looking rib on one of my model 12's and it is a Herters rib.

Dave Berlet

 

if the 12 is a 1959, it would have had a round post rib from the factory. I agree with everyones comments on it being an aftermarket rib.
regardless, that set up was the cats meow at one time in history.
walking on to a trap range with that back then, would have been equal to having a custom bowen or ljutic today.
sun wood blonde was in vogue in the late 50's-early 60's.

 

It is a Moneymakers rib from the 70s or 80s. I worked there in 1969/70. Lots of Model 12s and 42s went through for ribs.

Bruce Bowen

 

agree. the telltale sign of it being a moneymaker is how it extends way back on the receiver.