i have an old gun just want to find out more about it the stock has Charles daly serial number 125790. the barrel has j.p. sauer & son serial number 125790. it has 2 12 barrels on top and then a 3855 riffle barrel on the bottom. two rabbit ears and two triggers. a flip on top that goes left to right to swap to the riffle barrel and the brake down is on the left hand side of the gun. it has a crown for the proof mark only one I have seen some with two. each barrel is stamped 3 times with other marks. the action has 2 of the same stamps one is different it has a g where the barrel has a u. if some one could help it will be great my papa gave me this gun back when I was 8 and he is no longer with us so I cant go to him for this. it has been in our family for over 145 years. thanks in advance