A few examples of appraisal values for
LONDON 18K

• ASPREY OF LONDON 18K YELLOW GOLD
  ASPREY OF LONDON 18K YELLOW GOLD TENNIS TIE TACK Vintage Asprey of London 18K yellow gold tennis tie tack, marked: "APLC / 750" with English hallmarks; 0.5" L x 0.75" W. Base with chain marked: "375" with English hallmarks. Approx: 1.9 dwt.
• JEWELRY. ENGLISH FRENCH COOPER
  JEWELRY. ENGLISH FRENCH COOPER AND CO., CORNHILL London 18kt Gold Pocket Watch. An English French Cooper and Co., Cornhill London 18kt yellow gold open face pocket watch - stamped, "AC 2048" with an illegible pictorial mark. This watch features an 18kt yellow gold engine turned case with chased bezels, glass crystal, an ornate gold tone dial decorated with yellow, pink, and white gold tone floral swag, gold tone Roman numeral hour markers, sub seconds dial located at the 6 o'clock position, gold tone cuvette, and a cylinder escapement, eight hole jeweled key wind movement. Total approx. weight is 29.7 dwt (gross), excluding the movement. From a Westchester, NY estate. Dimensions: movement measures approx. 42.98mm in diameter. Condition: Good, with light surface scratches and minor dings/dents. Watch appears to run then stop, balance wheel moves freely. All watches sold as is.
• HENRY PACE LONDON 18K GOLD POCKET
  HENRY PACE LONDON 18K GOLD POCKET WATCH18k gold key wind English pocket watch. Inside of case marked 18 with crown and WR, movement marked Henry Pace London No. 2407. 1 3/4"-diameter. 78.8 grams total.