221B Baker St. Key Chain, Hand Stamped Sherlock Holmes Inspired Keychain This cool little aluminum key chain has been hand stamped with 221B Baker St. It measures 1/2" by 2" and comes on a standard split ring. Bright, sturdy aluminum is lightweight, hypoallergenic and will not tarnish. Handcrafted in the U.S. by Foxwise Jewelry. Quick shipping from California, US seller, ships in a gift box or bag.