As a Fender fanatic and fan of Duck Dunn I can attest to his Fenders history.
His 2 tone sunburst or sometimes called tobacco burst which was used on the very fist few years of the single coil original design p-bass(not the 3 tone of the latter years)is a 57 model judging by the color and tuners being the reverse winding type and the fact that they used 12 coats of clear coat on the neck which is why in all the vids I own or have seen his neck shows very little wear or discoloration.
His red P-bass is a combination of a 62 model red body and a latter year JAZZ bass neck,which I understand is how his Lakland bass is built with the jazz neck specs and the p-type body.
I am disappointed with him though I may say,I own a popular video in which Bob Efford gives a brief history about Fender basses and a few lessons from some of the more well known bassists whom use the model in discussion and it was quoted that Duck would turn down other models and brands because of his loyalty to his p-basses perticular sound and feel.
The vid is called playing in the style of Fender bassists and is a must for any Fender fan and covers a few samples of such legends as
Rocco(tower of power)
Stink(I mean Sting,Sorry!!)
I believe this is about all of them,great learning material as well,my info about Ducks basses are comprised from Fender books as well as many Blues Bro's vids and my experience building and repairing Fender basses so spotting certain things on a bass helps me determine the make,model and year of production ETC....,I do not claim to be an expert or 100% correct but if I did'nt think my comments to be correct I would not embarass myself,I am a bassist first and tech,fan,collector afterwards and wish no disrespect to this site,Donald or any member/s .
Thanks for allowing me to pass on what I believe to be accurate.
I believe that you are pretty close with those specs. His original Lakland's had both a P bass body and neck - the new ones however have been switched over to the thinner or as Duck says "faster" Jazz bass necks with the block inlays.
The Laklands are NICE instruments and well worth the $.