Overview
This is a precision-engineered brass frame from a scientific instrument, likely a dip needle or a vertical circle, manufactured by the renowned W. & L. E. Gurley company.
Preliminary identification
W. & L. E. Gurley Scientific Instrument Frame, c. 1890
Photo reference
1 uploaded photo
Story
During the late 1800s, the city of Troy, New York, was the epicenter of American precision engineering, home to the W. & L. E. Gurley company. This frame was part of an instrument used to measure the invisible forces of the Earth, such as magnetic dip or angular elevation.
Maker / Origin
Founded in 1845, W. & L. E. Gurley became the gold standard for American surveying and scientific instruments.
Condition & Value
The brass frame shows a consistent, authentic aged patina with no signs of structural cracking. It is missing the internal magnetic needle, the glass covers, and the brass bezel rings that would have held them in place.
Full Research
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Sold comps, value drivers, and venue guidance pulled from recent auction results.
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Market Analysis
Comparable demand stays strongest where maker, originality, and venue confidence line up. Broader examples still trade, but the range tightens quickly when provenance, condition, or selling lane fit is missing.
Value Drivers
- ▲ Strong maker attribution with credible period details
- ▲ Better-than-average condition for the category
- ▲ Broader demand rises when presentation and finish feel intact
Concerns
- ▼ Decorative-only demand limits the ceiling
- ▼ Surface wear or missing provenance can compress the range fast
- ▼ Regional sale lanes often underperform specialist venues
Best Venue
Specialty auction or a focused dealer with buyers already in this lane.
Comparable Sales
5 compsRegional auction
· Jun 2024Signed example with light edge wear and original frame.
$1,280
SOLD
Dealer archive
· Mar 2024Comparable format with stronger provenance and cleaner surface.
$1,450
SOLD
Marketplace sale
· Jan 2024Smaller related piece with visible craquelure and trimmed margins.
$980
SOLD
Estate platform
· Oct 2023Period match with softer condition and weaker subject matter.
$1,150
SOLD
Auction result
· Aug 2023Close market lane comp with similar material and presentation.
$1,375
SOLD