Sherlock Holmes Inspired - 221B Baker St - Hand Stamped Aluminum Ring, a Foxwise Original A 1/4" aluminum adjustable ring hand stamped with "221B Baker St" Bright, sturdy aluminum is lightweight, hypoallergenic and will not tarnish. Hand stamped one letter at a time by Foxwise Jewelry. A great and affordable choice for those with allergies or sensitivity to metals, aluminum is tarnish-free and won't turn your skin funny colors! Quick shipping from California, US seller, ships in a gift box or bag