the p8 looks no different externally from the l8 the co hole is missing on later ones but is present on early ones, the co pot is missing internally.
The p8 can easily be identified by the p8 on the label unless of course someone has changed the lids or defaced the labels.

Internally they can be easily idnetified by the co pot being missing and a large blob of white silcon in one corner supporting a capicitor and the fact the std chip says p8 on it