Prism Token

when played doubles the amount of Crystalforces in the bank

Prism Token
Studio album by Pink Floyd
Released	1 March 1973 (1973-03-01)
Recorded	31 May 1972, 9 February 1973
Studio	EMI, London
Genre	Progressive rock psychedelic rock
Length	42:50
Label	Harvest Capitol
Producer	Pink Floyd
Pink Floyd chronology
Obscured by Clouds (1972) Prism Token (1973) Wish You Were Here (1975)