Panerai PAM531 (Pre-owned - Good) — USD 5,490 on eBay

The PAM531 represents Panerai's Radiomir 1940 3 Days model in a 47mm stainless steel case configuration. This reference sits within the brand's 3 Days series, distinguished by its manual winding movement and substantial case proportions that characterize this particular model line. The watch features a 47mm stainless steel case housing a manual winding movement. The black dial is protected by sapphire crystal, while the fixed bezel maintains clean lines consistent with the Radiomir aesthetic. Water resistance extends to 100 meters, providing basic protection against moisture ingress. This reference appeals to collectors seeking a large-format Panerai with traditional manual winding operation. The 47mm case size positions it among the brand's more substantial offerings, while the stainless steel construction and black dial provide versatility within the 3 Days collection. The combination of manual movement and generous proportions targets enthusiasts who prefer hands-on interaction with their timepiece.