The NTE274 (NPN) and NTE275 (PNP) are silicon complementary Darlington transistors in a TO66 type case designed for general purpose amplifier, low–frequency switching and hammer driver applications.
Full spec sheet:
https://www.nteinc.com/specs/200to299/pdf/nte274.pdf
NTE274 NPN 80V 4A Darlington Power Amp Switch TO-66
SKU: NTE274
$6.45Price