Quick answer
The Blancpain 1735 is a grand complication wristwatch released in 1991. Blancpain built 30 pieces in platinum. A replica copies the dial layout, the case shape and the caseback markings. A replica does not copy the movement. No copy on the market runs a minute repeater, a split-seconds chronograph, a tourbillon and a perpetual calendar at the same time.
What the Blancpain 1735 is
Blancpain is a Swiss maker. Jehan-Jacques Blancpain started the firm in Villeret in 1735. The model name marks that year. The watch holds four complications: minute repeater, split-seconds chronograph, tourbillon and perpetual calendar. Blancpain lists about 740 parts in the caliber. Output stopped at 30 units. Original examples trade in the high six figures at auction, and the figure moves at each sale.
What replica versions copy
- Case diameter and profile. Most copies land between 40 mm and 44 mm.
- Dial layout: four subdials, Roman numerals, and an open aperture near 6 o'clock on some builds.
- Case material claims. Steel with platinum tone, gold plating, or PVD.
- Strap and clasp shape.
- Engraved casebacks with the model name and a serial number.
What replicas do not copy
The movement. A grand complication needs a hand-finished caliber with several hundred parts. Replica factories use stock automatic movements with 20 to 30 jewels. Subdials on most copies sit fixed or run simple day, date and 24-hour functions. The tourbillon opening on a copy is a cutout with a spinning balance wheel, not a carriage. A minute repeater needs gongs and hammers. Copies do not have them. Treat any listing that claims working chimes as false.
Price bands
First copy listings for this reference land between $150 and $600. Price tracks the movement, the plating thickness and the dial finish. Copies above $800 for this model are rare.
Checklist before you buy
- Ask for a movement photo with the caseback off.
- Ask for the caliber number. If the seller cannot name it, the listing is thin.
- Count the subdials. Four matches the original.
- Ask for a video of the seconds hand and the subdial hands.
- Get the return window in writing.
- Ask for plating thickness if the case is gold tone.
Care and service
Replica automatics run on service intervals of 3 to 5 years. Water resistance claims on copies are weak. Keep the watch away from water unless a pressure test proves the rating. Gold plating wears at the crown and the lugs first.
Legal note
Counterfeit watches infringe trademarks. US Customs can seize a shipment. Buyers in the US carry that risk.