Head from a Porta one but these heads were widely used on all 4 track cassette style units
I am guessing these would also work in a 244 etc just these were from these units
I have had these sent away as usual to the relap shop and they are now perfect and fully functioning with a test report all marked good ok.
I have these with a grey cable and red white molex connectors and an orange and yellow cable as there was some crossover it seems from the last big portastudios..
As you may know I send these off to the relap shop and they are tested before and after lapping, the lap shop decides if they are ok or not, anything not to spec is binned so will not come back on the market.
Azimuth and other problems are corrected so heads will run true if set up correctly.
Photo is a before lap.
Please use over 20mm tracked post for this item