Benchlot

Union square prices

What Union squares actually sell for, from 6 recorded sales and 5 listings for sale now.

Sold prices

Only 6 sales on record — too few to quote a reliable figure. The individual sales are listed below; judge them yourself.

Low confidence

The latest sale on record was on Jun 15, 2026.

Scan a photo of your Union squareto see what yours is worth against these sales.
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For sale now (5)

Currently listed. Benchlot links straight to the seller — no fees, no middleman.

Every recorded sale. The band spans the middle half of all sales; the line is the median.
median $54Dealers6 sales$37 — Fine UNION TOOL CO. 12 Inch Combination Square (Jim Bode Value Guide)$49 — 12 Inch Combination Square UNION TOOL CO. (Jim Bode Value Guide)$49 — UNION TOOL CO. Combination Square 12 inch (Jim Bode Value Guide)$59 — UNION TOOL CO. Diemaker’s Square 4 Inch (Jim Bode Value Guide)$125 — Extra Fine UNION TOOL CO. Combination Square Set 12 Inch (Jim Bode Value Guide)$135 — 12 Inch UNION TOOL CO. Combination Square (Jim Bode Value Guide)$50$100
WhereMedian soldMedian asking
Dealers$546—
Marketplaces—$25.9921

These are different markets, not a contradiction. Dealers list restored, checked tools and price accordingly; marketplaces carry everything from collector-grade down to parts. Compare within a row, not across the table.

Asking prices

Median asking
$25.99
Most ask
$16.95–$29.99
Listings
21

Asking prices run higher than sold prices. Sellers post hopefully, and unsold listings linger; treat the sold figures above as the real signal.

About Union squares

Union Manufacturing Co. of New Britain, Connecticut, made bench and specialty planes from the late 19th century until Stanley bought the company in 1920. Bench planes are the bulk of the output, along with combination planes, circular planes like the No. 113, and the No. 60 cabinet scraper; several patterns parallel Stanley numbers, as with the tail-handle block plane. The X-series vertical post smoothers, such as the XOA, and uncommon sizes like the No. 4 1/2 draw more interest than standard smoothers. Intact japanning, full-length irons, unbroken totes, and original boxes or labels raise value; rust, cracked castings, and replaced parts cut it.

The 6 sales behind these figures come from Jim Bode Value Guide (6), and run from 2021 to 2026; 2 closed in the last twelve months. 1 listing for sets, pairs or lots of Union squares was left out, because a set's price is not one tool's price.

Recorded sales

Every sale behind the numbers above, most recent first. Click through to the source.

ListingSourceSoldPrice
Fine UNION TOOL CO. 12 Inch Combination SquareJim Bode Value Guide2026-06-15$37
Extra Fine UNION TOOL CO. Combination Square Set 12 InchJim Bode Value Guide2026-01-08$125
12 Inch Combination Square UNION TOOL CO.Jim Bode Value Guide2023-01-30$49
UNION TOOL CO. Diemaker’s Square 4 InchJim Bode Value Guide2022-01-15$59
12 Inch UNION TOOL CO. Combination SquareJim Bode Value Guide2021-07-28$135
UNION TOOL CO. Combination Square 12 inchJim Bode Value Guide2021-01-23$49

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Union squares by size

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Updated 2026-10-28.