Reference guides · Vacheron Constantin
Vacheron Constantin Overseas 4500V vs 4520V: a buyer’s reference guide
Two blue-dial steel watches that look almost identical in photographs. How to tell the self-winding Overseas generations apart, and which questions to ask.
Two blue-dial steel Overseas watches can look almost identical in a listing photograph. The reference number tells you which generation you are actually discussing, and that changes which questions matter.
The self-winding Overseas with a date has been made in two closely related references in recent years: the 4500V and its successor, the 4520V. Neither is the "better" answer for everyone. This guide separates what Vacheron Constantin documents from what dealers and collectors report, so you can compare the right things.
Know which generation you are looking at
The 4500V belongs to the Overseas collection presented in 2016. A Vacheron Constantin press sheet published through the Fondation de la Haute Horlogerie describes a 41 mm case, 150 m water resistance and the new manufacture calibre 5100, delivered with three interchangeable straps, as were all the watches in the 2016 Overseas collection (2016 Overseas calibre 5100 press sheet).
The current steel blue-dial model is the 4520V/210A-B128. Vacheron Constantin lists it at 41 mm with a sunburst satin-finished lacquered blue dial, a date at 3 o'clock and the Hallmark of Geneva (Vacheron Constantin's 4520V/210A-B128 page). By April 2024, coverage of new Overseas releases was already using 4520V reference numbers (Hodinkee's April 2024 Overseas report).
The earlier steel blue-dial configuration appears in auction records as 4500V/110A-B128. One Phillips catalogue entry describes that reference as made exclusively for Vacheron Constantin boutiques (Phillips lot description). Treat a catalogue description as information about that lot, then confirm the specific watch's paperwork.
What stayed the same on paper
Both generations use calibre 5100. The 2016 press sheet and Vacheron's current 4520V page give the same headline movement figures: 30.6 mm diameter, 4.7 mm height, 172 parts, 37 jewels, 28,800 vibrations per hour and a 60-hour power reserve (2016 press sheet; current specifications).
The press sheet also notes twin barrels and a soft-iron ring around the calibre for protection against magnetic disturbances. On the current model, Vacheron lists magnetic resistance, with an "Antimagnetic" marking on the case back, and a 22K gold oscillating weight inspired by the wind rose (Vacheron Constantin's product description).
The official thickness figures differ. The 2016 sheet lists 11.00 mm for the 4500V it describes, while the current 4520V page lists 10.69 mm. That is roughly 0.3 mm, a real but small difference. In our view, it is unlikely to be the deciding factor on its own.
The bracelet is where the conversation changes
Vacheron's current page describes the 4520V bracelet as polished and satin-finished stainless steel with a triple folding clasp, plus three easily interchangeable straps: steel, leather and rubber (Vacheron's bracelet and accessory specification). It does not publish a comparison with the 4500V bracelet.
Several dealer and collector sources report that 4520V bracelets and straps taper to 18 mm rather than 20 mm, that the date aperture is slightly smaller, that strap buckle attachment was redesigned and that movement and rotor decoration changed slightly (Bob's Watches buying guide; WatchProSite forum digest). These are useful reports, not manufacturer specifications. Ask a seller for measurements and photographs instead of relying on them.
The practical question is fit. If your wrist is smaller, a stronger taper may matter more to you than the thickness figure. If you already own spare Overseas straps, do not assume they suit the other generation. Confirm compatibility with the exact references before buying accessories.
Match the paperwork and the accessories
A full reference can include more than the familiar 4500V or 4520V prefix. Vacheron lists the current watch as 4520V/210A-B128 with an internal code of X45AC128, while the Phillips entry gives X45A9728 alongside 4500V/110A-B128 (official reference listing; Phillips catalogue details). Make sure the paperwork, case back and listing describe the same configuration.
The accessories are documented differently, too. Vacheron lists grained dark blue calfskin leather and dark blue rubber for the current steel model. The Phillips 4500V lot lists an additional crocodile strap and a rubber strap with clasp. When a listing says "full set," ask for a photograph of every included strap, clasp and document.
- Reference: Confirm the full reference on the paperwork and compare it with the watch.
- Bracelet: Ask for the total wearable length, the number of spare links and the measured width at the clasp.
- Straps: Confirm which leather and rubber straps are included, plus any interchangeable folding clasp.
- Case and bezel: Vacheron says the bezel and bracelet design depicts the Maltese cross (official design description), so look closely at polished bevels and edges for wear or refinishing.
- Service and warranty: Ask separately for service records and the warranty documents; do not infer either from the reference.
Choose the watch you will wear
For a collector, the 4500V and 4520V are better understood as two expressions of the same idea than as old and new versions in a strict hierarchy. Decide whether the reported bracelet taper, the slightly thinner official case or a particular set of accessories matters to you. Then compare examples on the same basis.
If you compare prices, compare the same reference, dial, condition and accessory set. An asking price is not a completed sale, and neither reference should be treated as a promise about future value. Before paying for a pre-owned example, clarify the purchase, inspection, delivery and return terms in writing.
Our perspective: if the Overseas suits your life, the right example is the one whose fit, finish and documentation stand up to a few calm questions. The generation label is where that conversation starts.
Published by LumeVault. Specifications are checked against the Vacheron Constantin pages and press material linked in this article; reported generational changes are attributed to their dealer and collector sources. Buying guidance reflects our editorial perspective and is not a guarantee of value or availability. LumeVault is an independent dealer and is not affiliated with Vacheron Constantin.
Manufacturer references
https://www.vacheron-constantin.com/us/en/collections/overseas/4520v-210a-b128.htmlhttps://novelties-backend.watchesandculture.org/sites/default/files/documents/2016/overseas-calibre-5100_en_fd4d8.pdfhttps://www.phillips.com/detail/vacheron-constantin/172371https://www.hodinkee.com/articles/vacheron-adds-new-green-dials-to-its-overseas-collectionhttps://www.bobswatches.com/rolex-blog/vacheron-constantin/best-vacheron-constantin-watches.htmlhttps://www.watchprosite.com/digest/vacheron-constantin-overseas-4520v-review/Make the search personal.
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