Record pressings or mastering can be identified by the matrix prefix 'D.S.R.' (or 'DSR') or DYNA in the run-out area.
Company credits may appear abridged on releases, see: Dynamic Sound (3) and Dynamic Sounds Co. Ltd.. For the recording studio please use Dynamic Sounds Studios.
Mastering & Lacquer Cutting Engineers:
Dennis Thompson identified by his signature " D.T " on Matrix/Runout etchings
Anthony Wright (3) signature "Awright"
Garfield Francis or Garfield (9)
The Gentle Genius
Dudley aka Duds (3)
Engineers known to work there as Recording & Mixing Engineers: