I have several Gibson Pickups from Les Pauls. How the heck can you tell if you 're lo.ng at a 500T, 496R, 490, Cl.ic '57, etc? I 'm not finding . - There is a sizable selection of Gibson pickups available on its many guitars - here 's a guide to their characteristics. Click to read more at .I 've been trying to apply the process above to identify a pickup I came across by chance it is marked on the underside with the same "Gibson .With chrome covers removed, and pickups soldered in, I set the 3 postion pickup selector to the bridge position, and turned the volume up full..