Hammond Postal Telegraph Clock Value Guide

The Hammond Postal Telegraph Clock is a quintessential piece of 1930s Americana, representing the era's reliance on synchronized telegraph communication. Manufactured by Laurens Hammond's pioneering company, these metal-cased electric clocks were renowned for their precision by syncing directly with the power grid's alternating current.

What affects the value of Hammond Postal Telegraph Clock?

• Condition of the original paint and metal casing, with minimal rusting or denting commanding higher prices.
• Operational status of the synchronous motor and its ability to keep time on modern power frequencies.
• Clarity and preservation of the 'Postal Telegraph' logo on the dial, as fading significantly reduces collector interest.
• Presence of original wiring and components versus modern quartz movement conversions.

How to Identify Hammond Postal Telegraph Clock?

• Look for the 'Postal Telegraph' branding prominently displayed on the clock face.
• Verify the presence of the original Hammond Clock Company manufacturing labels or stamps on the rear of the metal housing.
• Check for the signature synchronous electric motor design characteristic of 1920s and 30s Hammond engineering.
• Ensure the dial features the original glass cover and period-correct Art Deco numerals.

History of Hammond Postal Telegraph Clock

Hammond Clock Company, founded by Laurens Hammond, was known for pioneering synchronous electric clocks in the 1920s and 30s. These clocks were highly accurate as they synchronized with the alternating current frequency of the power grid. The Postal Telegraph clocks were a common sight in public offices, reflecting the era's reliance on telegraph communication.