Teac Play head 50664530 two track These solenoids are powerful and

These solenoids are powerful and can be used in other projects

not sure if the mark 2 version used these

I would be tempted to put a bit of paint or coating on these where they touch the front disk

in principle on some of the machines there was a steel pin on which was a bottom metal bush that locked onto the pin

Teac Play head 50664530 two track These solenoids are powerful andI have seen many heads that have same specs but different part numbers and can only assume these are later models though I would have thought they would be interchangable These heads are used but have lots of life left like many the heads are a little tarnished but electrically sound, few passes of tape over them and be fine