This twelver is a mashup of a number of different models. The body is Danelectro-style masonite over chambered plywood, with Tolex binding. The headstock is interleaved Rickenbacker, the bridge is more like a Gibson, while the overall style is my typical Audiovox.
Extended headstock with all tuners interleaved on one side. Strip tuners gave tight spacing, but required very precise drilling. EBay body. Home Depot neck.
For drilling precisely spaced holes, like guitar tuners, make ( or buy ) a template. I make mine out of scrap maple. If you mess it up, throw it away, NBD. Eventually, you'll get it right, and then forevermore.