Original  RED cover and weight  for  Philips/ Pye/ Butterfly  type Stereo  Cartridge  

Based on a Zenith design and produced under licence in the UK at the Pye factory in Cambridge ...

Fitted  to  the PYE 1005  / 1006 and ACHOIC  1205 / 1206 ACHIPHON Record players

Known in the USA as  CBS / Columbia 360 

Far/ Middle east as  Model 3807