I bought this recently and have not worn it as much as I expected. To me, it wears larger than 39mm. That being said, I does feel thin / slim, even at ~10mm.

My preference aside, it is a beautiful dress watch with manual Swiss movement.

Incredibly comfortable Shinola leather strap .

Asking $205 via Paypal. US Shipping only.

Reviews:
CALAWAY / WHITE SAND
Baron Mauer Calaway Watch | aBlogtoWatch
Introducing The Baron Mauer Calaway Ref.2659 Watch

Description from creators:
The 316 low-carbon steel case shows dramatic movement with sweeping contours and contrasting edges. The lug chamfers, the Calaway’s most striking feature, bring a crispness and clarity to the watch, commanding a strong wrist presence in any environment. Reminiscent of military watches from the past, with a flat brushed bezel and steep beveled edges, the Calaway fuses classic elements with a more shaped and refined modern aesthetic. A pair of brushed angled platforms reduces the standard gap between the strap and watch case, unifying the watch with a near-seamless transition. The case has a 39mm diameter, 10mm thickness (excluding the subtly-domed sapphire glass), and is 49mm lug-to-lug.

The dial, unlike more typical flat dials, has a curved outer edge, creating a pan-pie aesthetic with a smoother sloped transition towards the minute markers. In ambient light, the raised angular indices and matching dauphine hands take up a fluttering, specular behavior, contrasting the dial’s micro-sandblasted finish. To ensure a high-definition and distortion-free viewing experience, the sapphire glass is double-domed and treated with an anti-reflective coating.

The Calaway houses one of the most reliable 2-handed shock-proof mechanical movements on the market: the SW210-1. This Swiss Made Sellita Caliber is a hand-wound 11.5 ligne movement, featuring an Incabloc shock system, 42-hour power reserve and 19 jewels at 28,800 vph. A push/pull crown configuration was specifically selected for ease of use when manually winding the watch.

Specifications
• Case, 316 Low-Carbon Stainless Steel, linear and circular brushing with contrasting polished surfaces
• White Sand micro-sandblasted dial with polished raised indices
• Blue luminescent Super-LumiNova on hands and dial
• Width of case: 39mm
• Lug-to-Lug Length: 49mm
• Height: 10mm (excluding sapphire crystal)
• Swiss Made Sellita SW 210-1 hand-wound mechanical movement
• Push/Pull Crown
• Double-domed Sapphire glass treated with an anti-reflective coating
• Water resistant to 5 Atmospheres
Reference 2659