Ask the Expert: What's the History Behind Solid Headstocks and Banjo Tuners on Guitars? | Acoustic Guitar
Amazon.com: Golden Age Restoration Tuners for Solid Peghead Guitar with Square-end, Short post model: relic nickel with matte cream knobs : Musical Instruments
Golden Age Restoration Tuners for Solid Peghead Guitar with Scallop-end - StewMac