Tascam Teac M-30 M-35 small rectangular pushbutton and spigot
These were from these mixers and were used in many others, they have a flat top to them unlike the Model 2 and 2A and some others that have lines.
There is also a small plastic spigot thats used but looks smaller than normal
Push button 10.58 mm high 10mm wide at widest part 5.57mm side at widest width
Spigot 11.34mm high 6.83x 4.04mm wide at widest part
As always some staining to the cream ones
Price for one
Just had some Grey In I am not sure where they was from maybe an m series but they are the same size and no ridges