"BB" prefix indicates 1985
For the S&W, you can request a history letter from S&W. Cost is 50 USD. Can't hekp on the H&R
what letter or letters are in front of serial number
The prefix letter shows the year of manufacture. 1956 is letter S
Your serial number letter prefix of the letter A means that your H&R shotgun was made in the year 1940.
You can get a letter from S&W for 50 USD
The Smith and Wesson factory. You will have to request a S&W letter for more information
us revolvers only have a 5 digit number with a letter prefix on some---1910-1935 t0
Letter prefix 'AA' = 1964, making it a 1st Model (1961-72). The value of your revolver very much depends upon condition, i.e. how much original finish is left, condition of grip and mechanical functioning. In 100% (new in the box) the value is around $250 while in 60% it is around $90.
I THINK your H&R 922 was made in 1948. In 1942 they added a letter prefix. changing to double letters in 1961.
Since you do not say, whether your Harrington & Richardson is a pistol, rifle or shotgun and you do not show a letter prefix to the serial number, I can only give you limited information based on a Model 48 Topper Single Shot Shotgun which was manufactured for a period of 14 years between 1943 and 1956. I hope this helps, until you can supply more information on your shotgun.
about 80 bucks... you wont know the age without the letter stamp. but normally they are aruond 1960-1980
The model 949 was produced from 1960-1985 in two versions, one is blued and called the 949, the other is color case hardened frame, and called the 949 western. As to value matbe $ 200-250 in excellent condition with box. Prices are really increasing on all H&R handguns in top condition. As to age of your piece I will need the serial # or at least the two letter prefix of serial # to give you a date of manufacture. Hope this helps