Value of old calculators
Old calculator value depends on type. Mechanical calculators, slide-rule calculators, early electronic calculators, and designer calculators compare in different markets.
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Old calculator value depends on type. Mechanical calculators, slide-rule calculators, early electronic calculators, and designer calculators compare in different markets.
Auction records are market evidence, not a final appraisal. Condition, authenticity, provenance, size, medium, completeness, working status, and demand can materially change value.
Quick value checklist
- Type: mechanical calculator, arithmometer, slide rule, flight calculator, electronic calculator, calculator watch, or abacus.
- Maker, model, serial number, case, instructions, box, stylus, accessories, and whether the mechanism works.
- Missing covers, stuck keys, cracked Bakelite, corrosion, battery leakage, broken dials, and replaced parts.
What changes the answer
Rarity, design, working condition, completeness, and original instructions can matter. A mechanical calculator is not comparable to a common later desk calculator.
Note: We couldn’t find enough auction records that directly match Value of old calculators to publish a defensible price table. If you are valuing a specific item, include its maker, model, material, photos, and condition so the search can be narrowed.
What similar items actually sold for
To help ground this guide in real market activity, here are recent example auction comps from Appraisily’s internal database. These matched sales are market context only, not an object estimate or identification, and they do not guarantee a price for your specific vintage calculator.
Shown USD range: USD 30-USD 900. Median of these 8 USD examples: USD 175.
| Comparable | What sold | Auction house | Date | Lot | Source-reported amount |
|---|---|---|---|---|---|
 |
ADDING AND LISTING MACHINE (CALCULATOR) Late 19th/Early 20th Century Height 14". Width 10". Depth 15".Source blocked; provenance matched | Eldred's | 2026-03-12 | 9179 | USD 225 (buyer’s-premium treatment unknown) |
 |
Rapid Mechanical Calculator | Weschler's | 2025-02-25 | 189 | USD 125 (buyer’s-premium treatment unknown) |
 |
Antique German Arithmometer: circa 1870’s mahogany case arithmometer/early calculator-adding machine; likely made by Burkhardt (case less inset handles & lock mechanism); 20” W X 10” D X 7 ¼” T *Does not appear as locked up – NOT WARRANTING AS WORKINSource blocked; provenance matched | Roan Inc. Auctioneers & Appraisers | 2025-12-19 | 208 | USD 650 (buyer’s-premium treatment unknown) |
 |
1956 First Edition Curta "Pepper Grinder" Mechanical CalculatorSource blocked; provenance matched | Sarasota Estate Auction | 2026-06-13 | 36 | USD 900 (buyer’s-premium treatment unknown) |
 |
Felt & Tarrant Comptometer Mechanical CalculatorSource blocked; provenance matched | ArtAntiques.com | 2026-06-21 | 195 | USD 90 (buyer’s-premium treatment unknown) |
|
19C Burkhardt Arithmometer Mechanical CalculatorSource blocked; provenance matched | Hill Auction Gallery | 2025-10-01 | 13 | USD 550 (buyer’s-premium treatment unknown) |
 |
Thomas de Colmar Arithmometer, Mechanical CalculatorSource blocked; provenance matched | Flints Auctions Ltd | 2026-05-12 | 244 | GBP 1,100 (buyer’s-premium treatment unknown) |
 |
Walther Mechanical Calculator Arithmometer & Other Vintage Pieces | Apple Tree Auction Center | 2025-11-05 | 290 | USD 105 (buyer’s-premium treatment unknown) |
 |
Russian c1970s Vintage Mechanical Calculator "Felix", Soviet ArithmometerSource blocked; provenance matched | Britannic Auctions | 2021-01-09 | 220 | USD 30 (buyer’s-premium treatment unknown) |
 |
An Addison - Luard Course & Wind Calculator, | Flints Auctions Ltd | 2025-03-12 | 290 | GBP 400 (buyer’s-premium treatment unknown) |
How these auction records were verified
Each row retains its exact source URL, lot identity, retrieval time, access result, and immutable record hash. Live source access was blocked; the exact record matched Appraisily's immutable pipeline provenance. Inspect the public comparable provenance record.
Disclosure: prices are shown as reported by auction houses and are provided for appraisal context. Learn more in our editorial policy.
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