Current market reference from completed auction sales over the last 12 months.
5 auction sales
Completed sales, not listing estimates
Updated every 15 minutes
Yesterday's auction activity available today
Nineteen sources
BaT, Cars & Bids, Mecum, Bonhams, SOMO, and more
Direct answer
The Harley-Davidson Big Twin Flathead market carries a current 12-month median auction price of $25,250 across 5 tracked sales. Recent examples commonly range from $19,750 to $26,250.
Values are estimated from completed auction results. Old Cars Data does not add buyer premiums, taxes, or fees during normalization, but source-reported results may already include them. Private-party sales, dealer asking prices, and undocumented condition details are not included unless they appear in source data.
12-month snapshot
Based on sold auction results from the past 12 months.
Past 12 months
Mid market
25th percentile
75th percentile
Sold examples
Photos from real Harley-Davidson Big Twin Flathead examples that crossed the block, each tied to its completed sale.
Imagery sourced from completed auction listings
Overview
Over the last 12 months, 5 Harley-Davidson Big Twin Flathead examples sold in USD at tracked auctions across 5 model years. The most-traded model year was 1949, with 1 sale at a median of $10,450. Condition, mileage, originality, and documentation explain most of the spread between individual results.
Model years
Median completed USD sale for each model year over the last 12 months. Each year links to its own valuation page.
Latest results
The most recent completed Harley-Davidson Big Twin Flathead auctions across all tracked sources.
"What did Harley-Davidson Big Twin Flatheads sell for last month?" - get answers in seconds. Ask about values, trends, comparisons, or anything you'd look up manually.
MCP prompt log
More Harley-Davidson
Browse the full Harley-Davidson model index with auction prices, trends, and sales history.
Reference notes
A Harley-Davidson Big Twin Flathead typically sells for about $25,250 at auction, with recent examples commonly ranging from $19,750 to $26,250 based on 5 sales from the last 12 months.
We tracked 5 Harley-Davidson Big Twin Flathead auction sales in the last 12 months.
Model year, mileage, condition, originality, service history, color, options, and provenance all move prices. Sparse markets can swing materially on a single notable sale.
| $10,450 | 1949 | 0 mi | Barrett-Jackson | Unknown | Sep 12, 2026 | Sold | View auction |
| $25,250 | 1942 | 521 mi | Bring a Trailer | Marquette, MI | Sep 3, 2026 | Sold | View auction |
| $75,000 | 1931 | 0 mi | Bring a Trailer | Neptune, NJ | Jun 27, 2026 | Sold | View auction |
| $26,250 | 1922 | 0 mi | Bring a Trailer | Harvard, IL | Jun 2, 2026 | Sold | View auction |
| $35,250 | 1933 | 5,000 mi | Bring a Trailer | Brentwood, TN | Jun 1, 2025 | Sold | View auction |
| $28,750 | 1931 | 0 mi | Bring a Trailer | Gloucester, ONTARIO | Sep 22, 2023 | Sold | View auction |
| $16,250 | 1934 | 0 mi | Bring a Trailer | Spanaway, WA | Jul 18, 2023 | Sold | View auction |
| $28,500 | 1935 | 3,000 mi | Bring a Trailer | Federal Way, WA | Apr 12, 2022 | Sold | View auction |
| $32,000 | 1934 | 0 mi | Bring a Trailer | Bozeman, MT | Dec 31, 2020 | Sold | View auction |
Bring a Trailer, Cars & Bids, Hemmings, AutoHunter, Hagerty, PCAR Market, All Collector Cars, Gooding & Co, RM Sotheby's, Barrett-Jackson, Sotheby's Motorsport, Car & Classic, The Market, Broad Arrow, MB Market, Mecum Auctions, PistonHeads, Collecting Cars, and Bonhams, refreshed every 15 minutes and mapped into one consistent schema.