Based on the original Egiziano commissioned for the Egyptian Navy in 1956. The 60mm beast is as old-skool Panerai as you will get, however it is crafted from high grade titanium and houses an in house Panerai Calibre P.2002 with 8 days power reserve.
The Radiomir Egiziano is limited to 300 pieces and will set you back a nifty 30,000USD. By the way it is rated to 100m.
Below is original an original Radiomir Egiziano with 60mm stainless steel case.