Tascam 133 Rec Play head 53786008? wired for 3 track but has 4 tracks for Portasudios etc

This is from a low use 133 there is no part number on this one but previous units

Had the 53786008 number  board just marked 933-00, no reason to doubt its different

has molex connectors on, low use

have with number on now and all same

I have seen a slightly different pcb from a later unit