Comments Grinsell gives references 591 664 & 5909 6583, & says it is "near junction of Shavercombe Lake & river Plym"!
All four slabs, but no coverstone.
References L.V. Grinsell DASP 36 (1978) Shaugh Prior 48.
J.R. Turner DASP 48 (1990) E45.
HER/SMR number 12744 SX 56 NE/229.
NMR number 438803 SX 56 NE 106?.
A map of the area can be found in DASP 36 (1978) Fig 3