Brass Pocket Telescope Value Guide

This collapsible brass monocular represents the precision engineering of late 19th-century United Kingdom optics, favored by naval officers and travelers alike. Its compact design and knurled focusing rings make it a quintessential example of portable Victorian-era field equipment.

What Is Brass Pocket Telescope Worth?

The typical price range for Brass Pocket Telescope is $75 - $90 based on recent sales. However, values can vary depending on the item's condition, rarity, and other factors such as:

• Clarity of the glass optics and the absence of internal fungal growth or heavy scratching.
• The condition of the brass patina, with higher value placed on original finishes over heavily polished surfaces.
• The legibility and crispness of the Wilton maker's mark and any associated retailer stamps.
• Mechanical integrity of the draw tubes, ensuring they remain firm when extended for viewing.

How to Identify Brass Pocket Telescope?

• Locate the 'WILTON' maker stamp typically found on the draw tube or near the eyepiece.
• Verify the presence of knurled focusing rings which should turn smoothly without excessive play.
• Check for the characteristic three-to-four stage collapsible brass cylinders consistent with 1880-1920 construction.
• Examine the glass lenses for the slight imperfections or yellowing common in period-correct optics.

History of Brass Pocket Telescope

Compact brass pocket telescopes were popular from the mid 19th century into the early 20th century for naval officers, travelers, and engineers. Often called opera glasses or field monoculars, these instruments combined simple optics in a cylindrical, collapsible brass tube for protection and portability. Many were made by small precision instrument makers and stamped with the maker’s name or retailer. They were frequently used for navigation, observation, and theatrical viewing before compact modern optics became widespread.