Bearcat "N" s/n?

[mohavesam]

What does an N in the s/n represent again?

 

[RSIno1]

Alphabet letter prefix with tall front sight blade and flat faced ejector rod button. Known range L273 to X165. About 11,500 made. 1959.
From Chad Hiddleson's Reference of Ruger Firearms. Edition 2. Get yourself a copy it's handy and complete.

 

[mohavesam]

excellent! thanks.

Any downside mechanically for a shooter?

 

[contender]

Nope,,, shoot it if you wish.
Alphabet Cats are a bit desirable to collectors.