These are "Quadoptic" H4 halogen headlights with European pilot light. They have glass lenses that deliver a wide, flat beam to light up the edge of the road without blinding oncoming traffic. These are safe for use in the U.S. and are designed for driving on the right-hand side of the road. Replacement H4 bulbs are readily available. Sold by the pair, including wiring and sockets for pilot lights. Made in the UK by Wipac. Ref: S4699B, WIS4699B.
All classic Minis imported into the U.S. from the U.K. or "Down Under" should be immediately converted to U.S.-spec headlights for proper alignment of the headlamp beams.
Note: North American spec cars usually have the parking light wired into the front turn indicator lamp, by way of a dual filament bulb. If you fit these Quadoptic lamps, the wiring that feeds the parking lamp bulb of the indicator lamp will need to be redirected to the pilot lamp inside the Wipac unit.