hi Nigel
really i dont know any thing about TO5
but that transistor is a thing like a 2n8050 or a c945 transistor but a bit smaller and flatter
yest i maight be a 2sc but i could not find any thing about it at my data books on my PC only thing i coud to find is 2sc2310
by the way this is from a car Wirerecorder, it has a DMC4002-001 IC(pins are at 4 side) and there is no voltage on its pins so i have to know its data sheet, does anyone have any idea? it seems it is for turing i think,