As the World Turns - 1956 1-13490 was released on:

USA: 6 April 2009

If that's 3/8 and 7/10, the LCD is 40.
If not, it's 13490

6745, 13490, 20235, 26980, 33725, 40470, 47215, 53960, 60705, 67450, . . .

If you know the brand, or who made your Navy arms co revolver, they would be able to tell you what year it is. There isn't anything on the internet with serial number 13490. You may also be able to take it to a gun shop and they may be able to tell you.

iso 14001 - iso 26000