| Issuer | Isle of Man |
| Year | 1999 |
| Type | Non-circulating coin |
| Value | 1 Crown |
| Currency | Pound (decimalized, 1971-date) |
| Composition | Copper-nickel |
| Weight | 28.28 g |
| Dimensions | 38.6 mm |
| Thickness | 3 mm |
| Shape and Technique | Round Milled |
| Orientation | Medal alignment ↑↑ |
| Engraver(s) | |
| In circulation to | |
| Reference(s) | KM#1006 |
| Obverse description | Right facing uncouped bust of Queen Elizabeth II, wearing the George IV State Diadem, legend and date around |
| Obverse script | Latin |
| Obverse lettering | ELIZABETH II ISLE OF MAN · 1999 RDM PM |
| Reverse description | Viking Mars Lander on the surface of Mars |
| Reverse script | Latin |
| Reverse lettering | · 30th ANNIVERSARY OF THE FIRST MAN ON THE MOON · VIKING MARS LANDER JULY 20th 1978 1 CROWN |
| Edge | Reeded |
| Mint | (PM) Pobjoy Mint, Surrey, United Kingdom (1965-2023) |
| Mintage | 1999 PM - BU - |
| Catalog ID | 1192066820 |
| Comments |
