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Patek Philippe, Ref. 438 Mid-Size Calatrava With Rare Breguet Numeral Dial, circa 1940's. ...
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Sold on Nov 20, 2025 for:
$10,000.00
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Description
Patek Philippe, Ref. 438 Mid-Size Calatrava With Rare Breguet Numeral Dial, circa 1940'sCase: 28 mm, 18k yellow gold, two body Taubert/Borgel case, screw back with 1945 service award inscription, inner antimagnetic metal dust cap, No. 636485
Dial: silvered dial, subsidiary seconds, black minute track, luminous blued steel needle hands
Movement: NO. 911796, straight line lever, manual wind, 18 jewels, monometallic balance adjusted to heat, cold, isochronism and five positions
Band: alligator band and plated buckle
Reference 438 was launched in 1935. The model is distinguished with its boy-size water-resistant-type case with screw down case back. The reference is seldom seen on the market with an applied gold Breguet numeral dial.
Condition Report*:
Type: Patek Philippe, Ref. 438 Mid-Size Calatrava With Rare Breguet Numeral Dial, circa 1940's
Dial: silvered dial, subsidiary seconds, black minute track
Hands: luminous blued steel needle hands
Metal: 18k yellow gold
Case: #No. 636485
Case Info: two body Taubert/Borgel case, screw back with 1945 service award inscription, inner antimagnetic metal dust cap
Case Width: 28 mm
Crystal: acrylic
Watch Movement: NO. 911796, straight line lever, manual wind, 18 jewels, monometallic balance adjusted to heat, cold, isochronism and five positions
Band: alligator band and plated buckle
Condition: The dial with some spotting and toning to the numerals. Case is good overall. Movement runs and sets as it should. Heritage does not guarantee timekeeping accuracy. We always recommend servicing for daily use and timekeeping accuracy.
*Heritage Auctions strongly encourages in-person inspection of items by the bidder.
Statements by Heritage regarding the condition of objects are for guidance only and should not be relied upon as statements of fact,
and do not constitute a representation, warranty, or assumption of liability by Heritage. All lots offered are sold "AS IS".
Dial: silvered dial, subsidiary seconds, black minute track
Hands: luminous blued steel needle hands
Metal: 18k yellow gold
Case: #No. 636485
Case Info: two body Taubert/Borgel case, screw back with 1945 service award inscription, inner antimagnetic metal dust cap
Case Width: 28 mm
Crystal: acrylic
Watch Movement: NO. 911796, straight line lever, manual wind, 18 jewels, monometallic balance adjusted to heat, cold, isochronism and five positions
Band: alligator band and plated buckle
Condition: The dial with some spotting and toning to the numerals. Case is good overall. Movement runs and sets as it should. Heritage does not guarantee timekeeping accuracy. We always recommend servicing for daily use and timekeeping accuracy.
Auction Info
2025 November 20 Watches & Fine Timepieces Signature® Auction #5574 (go to Auction Home page)
Auction Dates
November, 2025
20th
Thursday
Bids + Registered Phone Bidders: 20
Lot Tracking Activity: N/A
Page Views: 735
Buyer's Premium per Lot:
25% of the successful bid per lot.
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