The Ballon Bleu 42mm18K White Gold Factory Diamond Bezel Watch WE900951 (Reference WE900951) is a White gold cased luxury wristwatch by Cartier introduced in 2019. The case measures 42 mmmm with a Silver dial on a Crocodile skin bracelet. Powered by a Automatic movement.

On TheWatchInfo, the Ballon Bleu 42mm18K White Gold Factory Diamond Bezel Watch WE900951 is tracked across the secondary market in real time. There are currently 1 active listing with an average asking price of $18,990. Listings are sourced from Dealer. Price history, trend analysis, and condition breakdowns are available on this page.

Cartier watches are among the most actively traded on the pre-owned market. The Ballon Bleu 42mm18K White Gold Factory Diamond Bezel Watch WE900951 Ref. WE900951 is sought after by collectors for its white gold case construction and silver dial. Buyers and sellers use TheWatchInfo to track real-time price movements, compare listings across platforms, and understand fair market value before transacting.

When purchasing a pre-owned Ballon Bleu 42mm18K White Gold Factory Diamond Bezel Watch WE900951 Ref. WE900951, key factors to consider include the condition grade (unworn, mint, excellent, good), presence of original box and papers, service history, and whether the watch has been modified. Prices for examples with full box and papers typically command a 10–20% premium over card-only or watch-only examples. Use the listings and price history on this page to benchmark what a fair price looks like right now.