Most Panerai dials look the same, Arabic numerals, a sandwich construction, a layout you'd recognize from across the room. This one doesn't. Collectors call this the SLC dial, and there's more heritage packed into it than a first glance gives away.
What the Panerai Radiomir 1940 3 Days Ceramica actually is
This is the Panerai Radiomir 1940 3 Days Ceramica, reference PAM00577, a 48mm black ceramic case in the 1940 case style, running Panerai's in-house hand-wound P.3000 movement with a 3-day power reserve and 100 meters of water resistance. It's limited to 1,000 pieces.
New, this reference retailed between $9,500 and $12,000 depending on the year. Used, it typically trades between $5,000 and $5,800, and what it comes with affects that number. A full set with box, papers, and both outer boxes prices differently than a watch-only listing.
What is the SLC dial on the Panerai PAM00577?
The name comes from a small engraving on the dial: two frogmen riding a torpedo. That ties directly into Panerai's history with the Italian Navy in World War Two. Italian Navy commandos rode a manned torpedo called the Siluro a Lenta Corsa, nicknamed the maiale, or pig, to attach explosives to enemy ships underwater, and they wore Panerai watches to do it. It's a real callback to a time when a watch on someone's wrist actually mattered to whether a mission succeeded.
Why doesn't this Panerai have a crown guard?
This watch doesn't have a crown guard, which is normal for a Radiomir. Panerai's other two main lines, the Luminor and the Submersible, both rely on that crown guard lever. The Radiomir never has, going back to its original design. The crown itself is still screw-down, and on a hand-wound movement, that means unscrewing and rescrewing it constantly just to wind the watch. This one at least catches cleanly, which matters given how often you're doing it.
The 1940 case, explained
The case name comes from a real historical demand. In 1940, the Italian Navy told Panerai its watches needed to handle more tension and more water pressure. Panerai's answer was to mill the lugs out of the same block of metal as the case itself, instead of welding them on separately. That's the case this watch is named after and built around, even though Panerai still makes other Radiomir models today with the older wire-lug design.
Ceramic case: what it gets right, and the one thing to watch for
The case is ceramic, harder and more scratch-resistant than steel, and thinner than you'd expect from a 48mm watch, so it doesn't turn into one of those oversized Panerais that starts looking like a costume piece on the wrist. It reads big, but not cartoonish.
Panerai's whole culture is built around swapping straps constantly, and on this watch, every strap change risks leaving metal transfer marks on the ceramic at the lugs, since the steel spring bar rubs against it going in and out. Ceramic itself is genuinely difficult to actually scratch, so what you're usually seeing is metal transfer, not a true scratch. Taping it off properly before a strap swap goes a long way. This reference also doesn't share straps as easily as something like a Luminor 44, since it needs the correct spring bar and won't take a 47mm strap.
Sizing: who should actually buy this watch
At 48mm, this needs a big wrist to pull off. On a 7.25-inch wrist, it's genuinely too wide to wear comfortably, you'd want at least 7.5 inches minimum.
The 5D Score: 59/100
This scores a 33 out of 50 for Aesthetics & Heritage and a 26 out of 50 for Wearability & Utility, for a total of 59 out of 100.
That ties it with the Breitling Superocean Heritage II B20, sitting right between the Grand Seiko SBGR307 and the Panerai PAM00112 on the leaderboard.
See the full 5D Score leaderboard →
Aesthetics & Heritage — 33/50
- Styling: 8
- Movement & Craft: 7
- Cool Factor: 8
- Legacy: 6
- Value & Collectibility: 4
Wearability & Utility — 26/50
- Comfort: 6
- Usability & Tactility: 4
- Features: 2
- Build Quality: 8
- Versatility: 5
Total: 59/100
FAQ
What is the SLC dial on the Panerai Radiomir 1940 3 Days Ceramica?
It's a small engraving of two frogmen riding a manned torpedo, referencing the Siluro a Lenta Corsa used by Italian Navy commandos in World War Two, who wore Panerai watches on those missions.
Is the Panerai PAM00577 a limited edition?
Yes, it's limited to 1,000 pieces.
Does the Panerai Radiomir 1940 3 Days Ceramica have a crown guard?
No. Radiomir models don't use a crown guard, unlike Panerai's Luminor and Submersible lines. The crown is still screw-down.
How much is the Panerai PAM00577 worth used?
Typically $5,000 to $5,800, depending on what it comes with. New, it retailed between $9,500 and $12,000 depending on the year.
What movement is in the Panerai Radiomir 1940 3 Days Ceramica?
Panerai's in-house hand-wound Caliber P.3000, with a 3-day power reserve.
Can the ceramic case get scratched when changing straps?
Ceramic is genuinely hard to actually scratch. What usually shows up after a strap change is metal transfer from the steel spring bar, not a true scratch, and taping the case off before swapping straps helps prevent it.
