No known source
Yes. Website: Double Barreled Shotguns, High Grade Shotguns Dates of Production
You will need to supply the serial numbers to your shotguns to get the age of your browning shotguns correctly.
Unaware of any sn data published.
I know this a really simple answer but take it to a gun specialist.
Try Blue Book of Gun Values
The exact value of a Franchi Aristocrat shotgun is actually dependent upon a number of factors. Some of these factors would include the age and condition of the shotgun.
Bill Goforth has an excellent book on the H&R shotguns. You can do an internet search to find a copy.
In order to determine the age of Lefever shotgun, the serial number must be known. However, Lefever shotguns were only made and distributed between 1885-1916.
There are a wide variety of online merchants on the internet in this day in age. One can find online merchants by just simply taking a look at the Online Merchants Directory.
One can find brain age tests online on the Flash Fabrica, Free Brain Age Games and Corante websites. Also the lumosity site has some games for mental sharpness.
18 for rifles and shotguns, 21 for handguns
The legal age to gamble in Kentucky is 21. You can gamble online from Kentucky at age 18. Find reputable online casinos at http://web18casino.com/