The W5200025 is the Tank Solo at its most precious: the large model dressed in 18K pink gold, with a light silvered opaline dial, black Roman numerals, blued sword-shaped hands, and the pink gold beaded crown carrying its blue spinel cabochon. A slim 34.8 x 27.4 mm case, quartz convenience inside, and from the factory a round-scale alligator strap with a pink gold buckle. That last detail matters more than anything: this watch has no bracelet option – it has always lived on leather, which makes the strap its one true wearing part. Here's the correct strap size for the W5200025 and the best options to keep it dressed the way it deserves.
Which Strap Size Fits the W5200025?
The Tank Solo W5200025 takes a 20mm strap. On our product pages, simply select the 20mm option – that is the correct fit for the large 34.8 x 27.4 mm case.
The same 20mm width applies to the steel Tank Solo large models, so if you own both, your straps are interchangeable between them. The strap mounts on standard spring bars, and every Helvetus strap comes with its own buckle included, so nothing needs to be taken from the original strap.
One fitting note specific to the Tank: the brancards are short and sit close to the case, so overly thick, padded straps disturb the watch's slim proportions. Our Tank straps are cut flat and refined at the lug end, exactly as this case shape demands.
A Quick Look at the W5200025
The Tank Solo joined the collection in 2004 with a simple promise: the pure 1917 Tank silhouette, made effortless. Flat brancards, Roman numerals, sword hands – nothing added, nothing missing. The W5200025 is that formula in its most elegant execution, wrapping the large case in 18K pink gold while keeping the light opaline dial and blued hands that define the model. The Solo line has since passed the torch to the Tank Must, which makes well-kept examples like this one quietly collectible – the last of the pure Solos, in gold.
And here's the practical reality every owner of this reference knows: the strap does all the work. Gold case, gold buckle, alligator leather – it's a beautiful package, but leather is a natural material with a natural lifespan. Sun, skin, and seasons age it long before the watch shows any time at all. A boutique replacement is one route; a premium aftermarket strap delivers the same daily elegance for a fraction, and lets you keep the original alligator preserved for special occasions.
Gold on leather is also the oldest dress-watch recipe there is – which means this watch rewards strap choices more than almost any other Cartier.
The Best Straps for the Cartier Tank Solo W5200025
Pink gold, opaline silver, blued hands – the W5200025 gives a strap three beautiful things to work with. These are the pairings that suit it best.
1. Brown Crocodile – The Factory Recipe
Gold on alligator is how this watch left Cartier, and the brown crocodile leather strap for the Cartier Tank continues that story in the warmest way. Brown feeds pink gold like no other color – the case looks richer, the scales catch the light, and the whole watch reads exactly as intended: a gold Tank on fine skin. The natural first choice for this reference, and one of the most popular options among owners of gold Cartier models.
2. Black Crocodile – The Formal One
For evenings, the black crocodile strap turns the temperature down and the formality up. Black skin under pink gold is pure dress-watch language – sharp with a dark suit, flawless with black tie, and a striking counterpoint to the warm case. If the brown croc is this watch's day setting, this is its night.
3. Brown Leather – The Everyday Softener
Not every day calls for scales. The brown leather strap keeps the gold-and-brown harmony in a smooth, understated finish that dresses down beautifully – the gold Solo as a daily companion rather than an occasion piece. Comfortable, quiet, and very easy to live with.
4. Blue Leather – The Cartier Signature
The blued sword hands and the blue spinel in the crown are this watch's built-in accents, and the blue leather strap picks them up across the wrist. Deep blue against pink gold is a confident, modern pairing that still belongs in any boardroom – the pick for owners who want the gold to feel fresh again.
Want to browse further? The full strap collection for the Cartier Tank Solo includes more colors and finishes – all available in the 20mm fit for this reference.
Final Thoughts
A gold Tank spends its whole life on leather, so the leather should never be an afterthought. Renew the W5200025 when its original strap has served its years, keep the factory alligator safe for the days that matter, and let the watch itself do what gold Cartiers do best – outlast everything around it.
Helvetus is one of the leading names in aftermarket straps for luxury watches, and our Tank straps are cut for these slim rectangular cases rather than adapted to them. Every order ships free worldwide with no import costs, returns are easy, and more than 50,000 watch owners around the world trust our straps on their timepieces. The gold is forever – the strap is yours to choose.
