Hi CT, That’s a vailing gun it is done with a tick lacquer, it was mainly use back in the 40’s and 50’s on furniture, lamp shades would be painted with that slinky like design, custom car painter Larry Watson way back Introduced that technique to the custom car world back in the 60’s In bellflower California , Larry had once said it was done with a homemade rotating head on a spray gun , but I believe at one time you could buy this gun from Devilbiss which is a spray gun company, I have seen pictures of the gun Larry had , and from time to time I’ve racked my head on how to make one for myself, theirs a car done in the early 70’s painted but Walt Prey , the car is a 64 impala named Gypsie rose this car has tons of that technique applied to it you can google that to see , unfortunately I’ve never came up with a gun that will do that , I was told that a buddy of mine , Ralph out in California has got one but I’ve never seen it , sorry I couldn’t be any more help but your right it’s a awesome look !!