Guides

Practical collecting and buying guides.

• Antique Ship's Compass: Types and What to Check Before BuyingDry card or liquid, gimbals and binnacles: how antique ship's compasses work, what to inspect in the photos, and which makers to look for.
• Buying an Antique Sextant: A Checklist Before You BidWhat to inspect in an antique marine sextant before bidding: mirrors, arc, micrometer, telescope, maker's marks, the case, and how to avoid reproductions.