Front view
Dial, hands and bezel as delivered.
Case-back view
Case-back engraving and, where fitted, the sapphire display.
Movement
Calibre with its finishing and decoration.
On the wrist
Worn shot for proportion and strap drape.
Panerai · Radiomir
Panerai Radiomir 42 mm Green Stainless
Reference 56900ST.61
Reference at a glance
- Brand
- Panerai
- Collection
- Radiomir
- Model
- Panerai Radiomir 42 mm Green Stainless
- Reference number
- 56900ST.61
- Year / era
- 1993 · 1990s — mechanical revival
- Complication
- Minute repeater
- Movement
- In-house automatic, Superlative Chronometer
- Case material
- Stainless steel
- Dial type
- Green sunburst
- Strap / bracelet
- White rubber velcro strap
- Water resistance
- 500 m
- Limited-edition status
- Regular production, not a limited edition
Case, dial & bracelet
- Case dimensions
- 42 mm
- Case thickness
- 8.1 mm
- Case material
- Stainless steel
- Bezel
- Fluted 18k gold
- Crystal
- Box sapphire with AR coating
- Dial
- Green sunburst
- Hands
- Rhodium-plated baton hands with luminous fill
- Indexes
- Applied Roman numerals
- Bracelet / strap
- White rubber velcro strap
- Clasp / buckle
- Triple-folding clasp with safety catch
- Water resistance
- 500 m
Movement
- Movement / calibre
- Calibre 64D — In-house automatic, Superlative Chronometer
- Movement type
- Manual-winding
- Frequency
- 21,600 vph (3 Hz)
- Power reserve
- 72 hours
- Number of jewels
- 27 jewels
- Complications
- Minute repeater
- Functions
- Perpetual calendar, leap year
- Watchmaker
- The calibre is built in-house and adjusted in five positions before delivery.
Production & market
- Production period
- 1993 – 1997
- Limited-edition quantity
- Not applicable
- Current market information
- Consistently trades above retail; waiting lists at authorised dealers remain long.
Designer
Gérald Genta
Gérald Genta (1931–2011) trained as a goldsmith in Geneva and became the most influential watch designer of the 20th century. Working freelance, he sketched the Audemars Piguet Royal Oak overnight in 1970, followed by the Patek Philippe Nautilus, the IWC Ingenieur SL and the Bulgari Bulgari — defining the integrated-bracelet luxury sports watch as a category.
Historical significance
Panerai Radiomir 42 mm Green Stainless sits within Panerai's Radiomir line, introduced in 1993. It carries the house codes established since 1860 — stainless steel case, green sunburst dial and in-house automatic, superlative chronometer — and is one of the references collectors use to date the evolution of the collection.
Interesting facts
- The movement's bridges are decorated even where they will never be seen once the watch is cased.
- The bracelet tapers across its length, which is why the profile looks thinner on the wrist than the specification suggests.
- The reference was originally planned as a one-year run and stayed in the catalogue for well over a decade.
The House
Panerai
Brand facts
- Founding year
- 1860
- Founder
- Giovanni Panerai
- Headquarters
- Italy
- Tier
- Luxury
- Major collections
- Luminor, Radiomir, Submersible, Luminor Due, Quaranta
- Signature technologies
- Hand-applied guilloché dials · Proprietary case-hardening and polishing · In-house hairspring production
- Famous movements
- In-house manual-winding · In-house automatic, chronometer certified · In-house automatic, Superlative Chronometer · In-house automatic chronograph
- Notable watches
- Panerai Luminor 39 mm Black Stainless (1968) · Panerai Luminor 44 mm Salmon Ceramic (1955) · Panerai Radiomir 40 mm Skeletonised Quartz (1963) · Panerai Radiomir 44 mm Green Carbon (1995)
Brand history
Panerai has spent more than 166 years refining a single idea: a watch should outlive its owner. From the earliest workshop pieces to today's Luminor, the house has balanced technical ambition with a recognisable design language, and its collections remain among the most closely followed by collectors worldwide.
Giovanni Panerai established Panerai in 1860, working from Italy at a time when precision was measured by hand. The founder's obsession with finishing and accuracy still defines every Panerai calibre produced today.
Historical milestones
1860
Giovanni Panerai founds Panerai in Italy.
1899
Panerai earns its first international recognition for precision timekeeping.
1969
The quartz era forces Panerai to redefine mechanical watchmaking.
1990
Panerai enters the modern collector market with its signature lines.
2024
Panerai continues to produce Luminor, Radiomir, Submersible and other icons in limited numbers.