Beautiful and never used. Just look at these green Litz wound coils. These were boxed together as a set for a Raleigh PM receiver but the coils are standard Type CFT formers and are wound and labeeled as shown. Most probably these comprise of a Colvern MM (tuning). a Colvern OC (oscillator) units.
Whatever, they are in nice condition, protected by the box which has had re-inforcing passe-partout tape applied to the internal lid edges to re-inforce them.
These coils fit the standard Colvern FCF, TS, PF, TBS, BS six pin bases or the Eddystone equivalents.