| Issuer | Brunei |
| Year | 1977-1986 |
| Type | Standard circulation coin |
| Value | 1 Sen |
| Currency | Ringgit / Dollar (1967-date) |
| Composition | Bronze (97% Copper, 2.5% Zinc, 0.5% Tin) |
| Weight | 1.94 g |
| Dimensions | 17.78 mm |
| Thickness | 0.91 mm |
| Shape and Technique | Round Milled |
| Orientation | Medal alignment ↑↑ |
| Engraver(s) | Christopher Ironside |
| In circulation to | |
| Reference(s) | KM#15, Schön#18 |
| Obverse description | Right facing bust of Sultan Hassanal Bolkiah, Legend without numeral `I` in title |
| Obverse script | Latin |
| Obverse lettering | SULTAN HASSANAL BOLKIAH · |
| Reverse description | Ornamental pattern |
| Reverse script | Latin |
| Reverse lettering | · KERAJAAN BRUNEI · 1978 · 1 SEN |
| Edge | Plain |
| Mint | Royal Mint, Llantrisant, United Kingdom (1968-date) Singapore Mint, Singapore |
| Mintage | 1977 - Royal Mint - 280 000 1978 - Royal Mint - 269 000 1979 - Royal Mint - 250 000 1979 - Royal Mint; Proof - 10 000 1980 - Singapore Mint - 260 000 1981 - Singapore Mint - 540 000 1982 - Singapore Mint - 100 000 1983 - Singapore Mint - 500 000 1984 - Singapore Mint - 400 000 1984 - Singapore Mint; Proof - 3 000 1985 - Singapore Mint - 200 000 1985 - Singapore Mint; Proof - 1986 - Singapore Mint - 101 000 1986 - Singapore Mint; Proof - 7 000 |
| Catalog ID | 1575960220 |
| Comments |
