No published sn data.
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.
frame.
Most likely its the serial number
1897
50-200
Richland Arms was an importer in the early 70's
if your '51 navy is original (not repro) and no '0' in front of serial number, then made about 1853.................................. i have a 1851 also serial number 56870 could you tell me mine.at cortez@wildblue.net
Odds are it was made in Italy
No published sn data.
50 - 75 usd
depending on condition $150 - $250
He got a six shot Navy revolver from Jerilderie.