PenComps / TWSBI / Fountain pens
TWSBI 580
Diamond line
Median sold price
$70
as of 2026-07-23
Sold in last 90 days
26
Sold range
$50–$102
outlier-trimmed, n=25
Median of 25 completed eBay sales (trailing ~90 days, IQR-trimmed, accessories and parts listings rejected, listings under $30 excluded as accessory noise). This is what buyers are actually paying — not what dealers are asking.
Latest sales
| Sold listing | Price | Date |
|---|
Showing the 3 most recent of 26 qualifying sales — members see all of them, plus the full daily price history. Browse current sold listings on eBay →
Members
Full history & alerts for the TWSBI 580
- Every daily median we've recorded — see whether this market is climbing or cooling.
- The complete comp record — every qualifying sale in the window, price and date.
- Price alert — an email the day the median crosses a threshold you set.
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