by Alice Rogers Michael Förtsch I set an eBay alert. Trephine; Trepanning Tool; Terebra Serrata; Circular Bone Drill. I browse Etsy. I browse Craigslist. I browse Facebook Marketplace. I browse Google, and all the weird antique auction sites that pop up on it. Last I saw a real antique trephine it was laid on moldy old red velvet in an oddity store that’s long since closed its doors. It was $200. At the time I was living off plain tofu fried hard and those bags of mixed veget