Valje 1987???

I just picked up a set of Valje congas, and I think they were made in 1987 because of the date written in side. Theres also a sticker from the Memphis Drum Shop in each drum. The congas have a few cracks but they sound great and are simular in weight to the ones that were made in LA. They are 30" tall not like the 31" made in LA, and its a set with quinto and conga. The lugs and the rims all have the Valje imprint on them. From what I have read the Valje factory in San Fransico CA was burned down in 1986 and at some time the name was sold to LP. Can anyone tell me if these are LP Valjes or some of the last Valjes that may have been made independantly? Are they considered vintage and worth anything? or should I just try a restoration project and enjoy a great sounding pair of congas?