Stratocasters have two main date indicators: one signed in pencil or stamped on the heel of the neck and one pencil signed in the tremolo cavity on the back of the body (until about 1966 or so).

What pick did Jimi Hendrix use?

Fender Medium Celluloid Guitar Pick Fender Medium Celluloid Guitar Pick This seems to be the pick that Jimi used most of the time. Looking through the photos, one can usually notice that he holds a red/black pick in his hand. This is probably Fenders (more likely) or possibly Mannys Music (probably used just on occasion), 351 shape celluloid pick.