Bilt Guitars California Collection ESGMaker: Bilt Model: ESG Condition: New Description: Introducing the Bilt X Coast Sonic California Collection; handcrafted from single slabs of beautifully full grained Sassafras in a transparent white finish with gold hardware. A nod to the classic 50s Mary Kaye styling. Our designs are shaped and informed by a deep experience in guitar repair and restoration. We have the advantage of having worked on thousands of guitars and with thousands of players.