Sextants in Silver and Metal: A Guide for Appraisers and Collectors

Introduction

Sextants are navigational instruments used to measure the angle between an astronomical object and the horizon, primarily for celestial navigation at sea. While sextants have evolved in materials and technology, antique sextants made from silver and other metals are highly prized by collectors and appraisers for their historical significance, craftsmanship, and aesthetic appeal. This guide provides insights into the history, notable makers, types, and appraisal considerations relevant to silver and metal sextants.

Historical Context

Origins and Development

The sextant's development began in the 18th century, building upon earlier navigational tools like the quadrant and astrolabe. The name "sextant" comes from the arc of the instrument, which is one-sixth of a circle (60 degrees). Brass and wood were the predominant materials used in early sextant construction, but luxury models included silver, which added both durability and aesthetic value.

Importance in Navigation

Sextants played a crucial role in maritime exploration and trade, enabling sailors to determine their latitude and longitude accurately. Their invention marked a significant advancement in navigation, allowing for safer and more efficient sea travel during the Age of Exploration and beyond.

Notable Makers and Manufacturers

1. Thomas Mercer

A notable British manufacturer known for producing high-quality marine instruments, including silver sextants. Their pieces are characterized by precision engineering and elegant design.

2. Bennett & Co.

Famed for their elegant silver sextants, Bennett & Co. created navigational tools that combined functionality and artistry. Their instruments are highly regarded among collectors.

3. E.G. Breithaupt

A renowned German maker, Breithaupt produced exquisite sextants, often incorporating silver fixtures. Their instruments are appreciated for accuracy and craftsmanship.

4. H. Hughes & Son

This British firm produced high-quality sextants, often featuring elaborate silver detailing. Their pieces are notable for both innovation and traditional design.

5. W. & L.E. Gurley

An American company known for manufacturing sextants and other surveying instruments, often characterized by robust construction and precision.

Types of Silver and Metal Sextants

1. Navigational Sextants

These are the traditional sextants used on ships to measure the angle between the horizon and celestial bodies. They are typically made with brass frames, silver plating, and glass mirrors.

2. Astronomical Sextants

Larger and more precise than navigational sextants, these are used primarily for astronomical observations. They often feature more elaborate designs and metal compositions, including silver for added luxury.

3. Surveying Sextants

Used for land surveying rather than marine navigation, these sextants may also feature silver elements and are not as common as navigational ones.

4. Decorative Sextants

Some sextants were produced primarily for decorative or presentation purposes, often featuring extensive silver work and high-quality craftsmanship that appeal to collectors.

Appraisal Considerations

1. Condition

The physical condition of a sextant is paramount in appraisal. Look for signs of wear, corrosion, or damage to the mirror and levels. Pieces in working condition will generally command higher values.

2. Maker’s Mark

Identifying the manufacturer’s mark is crucial for authentication and value assessment. Renowned makers tend to boost a sextant's marketability and price.

3. Materials

The materials used in the sextant, particularly the presence of silver or quality metals, significantly influence its value. Silver elements often enhance both the aesthetic and historical relevance.

4. Design and Craftsmanship

Intricate designs, unique features, and quality craftsmanship can elevate the desirability of a sextant. Look for special features like engraved details or superior mirror quality.

5. Provenance

A documented history of ownership, particularly if the sextant was used in significant voyages or belonged to notable navigators, can greatly enhance its value.

6. Market Trends

Understanding current trends in collecting and maritime history can inform the appraisal. The interest in marine antiques and navigational instruments can fluctuate with changing tastes and economic conditions.

Conclusion

Sextants in silver and metal are not only functional instruments for navigation but also significant artifacts reflecting maritime history and craftsmanship. For appraisers and collectors, a thorough understanding of the historical context, notable makers, various types, and evaluation criteria is essential in navigating the market for these unique collectibles. As maritime history continues to captivate enthusiasts, the appreciation for beautifully crafted sextants remains strong, making them valuable additions to an eclectic collection.