First pressing with lenticular gatefold sleeve, turquoise coloured label, unboxed Decca logo & red / white inner sleeve.

Copies with ending matrix 1P/P1 are true mono mix.
The easiest way to verify this mono mix is play and listen the song "The Lantern": at the beginning there must be number 3 tolling bells, otherwise is a fold down mix.
Copies with "T2" on matrix are later copies and have a fold down mix.