Dating an early Bear Super Mag (black death style)

[Huntschool]

I asked a number of years ago for help dating a Bear Super Mag that I had and got reply's.  Over time I seem to have lost that info, my bad.

So, does anyone know where to look or who might have the dating info, or who can date this bow for me ?

SN 8x1348

Thanks

[Blackhawk]

1968

[Huntschool]

1968

Blackhawk:

Thank you so very much.