10-7 factory Nickel?

[Brush2000]

Hello I just swiped this 10-7 off my local Armslist for 300$ I couldn't really afford it after just buying a 32. Hand ejector and a 3in 37 but I think I won't find another 10-anything for 300$ in my area again SN5D15047
Has a N on cylinder and frame is that the factory Nickel mark?

 

[alwslate]

N on the rear face of the cyl. Looks like a factory Nickel gun to me.

 

[MajorD]

Great gun and price and yes looks to be original nickel. In some guns I have also seen an N on the barrel flat above the ejector.