AI identification & appraisal estimate

Plane Trigonometry by Garabedian and Winston (1929)

Submitted photo of Plane Trigonometry by Garabedian and Winston (1929)
Photo submitted by the user — not generated by AI

User's notes

Good condition

These notes were written by the person who submitted this item. Appraiser.AI has not verified them, and the AI's identification and estimate may rely on them.

AI Estimated Value

Not an official valuation

$25-50

AI estimate as of June 20, 2025 · verify with a professional before acting

AI-Generated · Verify before acting

Everything on this page is generated by AI for informational purposes only. AI can make mistakes — the AI may misidentify items or misattribute them (artist, maker, brand, designer, origin, era). This is not an official valuation and should not be used for insurance, sale, tax, estate, legal, or lending purposes — or any decision requiring a certified appraisal. It is not an authoritative claim about any person, brand, or rights holder — do not share or rely on it as a factual statement about a third party. Always consult qualified professionals before making financial decisions.

This analysis also relies on unverified notes provided by the user, which may be incomplete or inaccurate and could affect the result.

Read the full disclaimer

AI Item Analysis

This item is a copy of "Plane Trigonometry" by Carl A. Garabedian and Jean Winston from The University of Cincinnati. It is identified as a First Edition, Second Impression, published by McGraw-Hill Book Company, Inc. in 1929. The physical characteristics visible include aged, cream-colored paper with black printed text. The typeface appears to be a standard serif font, typical of texts from the early 20th century, indicating a classic academic style. Given its age, the paper exhibits a natural patina, showing subtle discoloration consistent with nearly a century of existence. There are no immediate signs of significant damage such as tears, major creases, or heavy foxing which suggest the 'good condition' noted. The binding is not visible but the page itself appears relatively flat, indicating it is likely well-preserved, though a slight ripple might be present on the right edge. The printing is clear and crisp, without any smudging or significant fading, indicating good quality printing for its time. The clear legibility of the text and lack of severe staining suggest it has been stored appropriately. This particular edition provides a timestamp from the interwar period, offering historical context to the academic curriculum of the time.

AI Appraisal Report

I have examined the provided image of “Plane Trigonometry” by Garabedian and Winston, published by McGraw-Hill in 1929, identified as a First Edition, Second Impression. Based on the visual evidence, the paper displays age-appropriate cream coloring and a standard serif typeface typical of the era. The printing appears clear and crisp, with no immediate signs of smudging or significant fading, suggesting good print quality for its time. The absence of visible tears, major creases, or heavy foxing supports the owner's claim of “Good condition.” The relatively flat page indicates a potentially well-preserved binding, though this cannot be fully assessed without a direct view.The market for academic textbooks from this period is generally modest, unless authored by a particularly prominent figure or associated with a significant historical event. While Garabedian and Winston were academics at the University of Cincinnati, they are not widely recognized as foundational figures whose works command high prices in the collectible book market. Demand for this specific title would likely come from niche collectors of historical mathematics texts or university archives. It is not considered rare. Factors impacting its value negatively include its nature as a textbook and its second impression status within the first edition, which marginally reduces desirability compared to a true first printing. The primary limitation in full authentication is the inability to physically inspect the binding, all pages for completeness, internal foxing, previous ownership marks, or repairs. A physical examination would allow me to verify the binding integrity, confirm all pages are present and free from hidden defects, and thoroughly assess any hidden wear or repairs that could impact value. Provenance documentation, such as original receipts or previous owner details, would further enhance authentication and historical context.

Keep exploring

More book appraisals

Get your items appraised

Instant AI-powered appraisal estimates from a photo

Browse More Appraisals