When Paul Hamer asked if I'd ever come across a Les Paul Personal, my reply was, what is a Les Paul Personal? Hamer said "You've seen the Les Pauls with low impedance pickups. The Personal was the top model in that series and had a place to plug in a gooseneck mic." No, I had definitely never seen one like that.
That was back in 1983 when Paul Hamer was looking for a Les Paul Personal. The memory stuck with me because Hamer was important in the guitar world. He was co-owner of the exclusive USA-made Hamer Guitar Company which supplied rock stars with guitars often seen on MTV. I thought if Paul Hamer wanted a Les Paul Personal, it must be a cool guitar.
I have not seen Paul Hamer since he dropped by my shop 33 years ago, but I have finally seen a Gibson Les Paul Personal and I bought it for my Guitar Museum. It's a 1970 model, with a lot of finish checking and a few dings, but it's beautiful!
Gibson offered the Les Paul Personal from 1969 though 1971. According to Gibson's log of shipping totals, only 370 were produced. At the time, the “Personal” was the most expensive Les Paul model ever produced with a retail price tag of $765.00 w/case (= $4,950.00 in 2016 dollars).
It really does have a plug-in for a gooseneck microphone. This is one of the many features that the famous entertainer, Les Paul, desired for his personal use. Thus the model name "Personal." Les Paul wasn't known as a singer, but he required a mic for announcing song names and for talking to the audience.