Things You'll Need
Instructions
Familiarize yourself with antique gin bottles. Visit the website Antique Bottles and go to the "gin" page for dozens of links and resources. Scour auction sites like eBay as well as specialty auction houses like American Bottle Auctions (see Resources, below). Check out their listings, most of them with photos, and see if you can find your bottle.
Join a club like the Federation of Historical Bottle Collectors (see Resources, below). Subscribe to the group's bimonthly magazine, Bottles and Extras, and check out the directory of bottle collectors. If there's one near you, contact him and see if you can meet, or at least exchange emails and develop a relationship. Fellow collectors can almost always either identify your antique gin bottle themselves or steer you to someone who can. All you need is a digital camera to take a picture of your bottle and Internet access to send it.
Pick up a reference book like Kovels' Bottles Price List, by Ralph and Terry Kovel (Random House Reference, 13th edition, 2006). Kovel is one of the most respected names in antique circles, publishing a wide assortment of price guides. This book is a 272-page paperback with more than 350 photos and 12,000 listings.
Contact a bottle appraiser (several are listed on the Antique Bottles website under "appraisals") and send him a detailed description of your antique gin bottle and some digital photos.