Mallard Dura-X by Jules Borel Swiss Quartz Watch, Sapphire Crystal, 500 Ft, Ref. JB-W16/16D
Updated August 6, 2026
| Lot number | 0057 |
| Estimate | $10 - $200 |
| Opening bid | $10 |
| Category | Jewelry & Watches |
| Auction | EXCLUSIVE WATCHES AND POCKET WATCHES 13 |
| Date | August 14, 2026 at 6:00 PM EDT |
| Auction house | Sphere Auctions LLC |
| Location | Sun Prarie, Wisconsin |
This is a Mallard Dura-X wristwatch, made by Jules Borel & Co., in a stainless steel case measuring 36.88mm (measured with calipers). The white dial is signed "MALLARD" below a red/white/blue shield
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