I'm looking at buying this 110l the owner has owned if for 10 years and shot about 3 boxes through it. It has a 5 digit serial number with no letter which I'm thinking means it is pre 68. It has a nice wood stock with good checkering and he is asking 400. Is there anything I should know about this or look for? I am very familiar with the newer ones but wasn't sure if one this old has anything special to look at