Your case material, design, and style may differ from these examples. The images below are general representations of the most common case types. With caution, the principles below can be utilized to open other case types.

While uncommon, other case types were also manufactured. Over 3,500 watches available from Rolex, Omega, Breitling, TAG Heuer, Cartier and more. The guides below represent the most popular case types for American pocket watches. Buy and sell pre-owned watches with Watchfinder & Co. If the case has no hinges nor lips and is characterized by one seam instead of two, follow the instructions to open the swing-ring case below.

If the case has no hinges nor lips, but is characterized by two parallel seams around the edge, follow the instructions to open the screw bezel and back case below. If the case has no hinges but features a lip (usually near the pendant), follow the instructions to open the friction back case below.

If the case features one or more hinges, follow the instructions to open a hinged case below. Hi Montrealgpf1,I notice that the pendant has a date letter of 'd' in Old English, which is certainly for 1859/60, although pendants were frequently made. Examine the perimeter of the case and count the number of hinges, number of seams, and number of lips (protrusions or indentations).

Crescent Watch Case Co Serial Numbers