Vintage Cal Straight zip Leather jacket

[N1011]

Hi everyone,
I recently picked up a Cal straight zip, and had a few questions. I was wondering if it’s from the 50s or 60s, and whether it was HH or not? I see that all the zippers are Talon, however, I’m not quite sure.

Thanks!

 

[Albe64]

From the grain of the leather I suppose it's steerhide.... Lovely jacket by the way