GE Portacolor MFG Year Identification

[Findm-Keepm]

Originally Posted by dieseljeep

Sams shows a number 1223 folder, dated 3/72. The set's probably a 1971 model year.

A-yep!

H-3 chassis (I have one with all the GE documentation/service lit) is 1970, so yes, the H-4 is 1971. The HE chassis PortaColor was introduced in 1972, 1973 introduced the 10JA chassis solid-state PortaColor, and 1974 was the 10QA Chassis PortaColor so your set is among the last of the all-tube models.