273 Camshaft identification?

Hello, I just finished my engine rebuild and It's ready for power/torque measuring.

I took out Camshaft and find out some numbering on the shaft * L 17*.
I am wondering will it be original or some aftermarket camshaft?

Engine is 273, 4bbl, build late 1966, cause Barracuda has been shipped to dealer Dec. 30th. 1966.