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Hello, newbie to the world of transistors here.

I have various devices that appear to be transistors of some sort but do not begin with letters.

TS 1740 and then below the number 6 over 317....I can't see anything written where the 3 legs are.   

Hi folks newbie here....I have some transistors:

GE brand - 4JX1D765  426 black with GE logo on top

TS1740  6 317 with a 'ts' printed within a small circle

I assume they are USA made...are the TS possibly Tung Sol?