Leica R4 with Summicron-R 50mm F2 lens in nice order.

The Leica R4 family of Leica 35mm SLR cameras was launched in 1980. The camera design was a joint venture based on Leitz’s co-operation agreement of 1972 with the Minolta Camera Co. Ltd.. The Copal Company developed the shutter. Minolta’s version was launched in 1977 as the Minolta XD-11 in the US, the Minolta XD-7 in Europe and Minolta XD in Japan. The Leica R4 was made available in five versions; the Leica R4 Mot electronic in 1980, the Leica R4 in 1981, the Leica R4 chrome in 1982, the Leica R4s in 1983, the Leica R4s-2 in 1985, and a special limited edition Leica R4 in gold and brown skin was made available in 1984. Later, several more models have emerged from the same basic concept, mostly with improved electronic features like TTL flash metering and exposure modes.
Although developed as a joint venture, Leitz made their version somewhat differently, especially the exposure metering system and the top cover design and controls. Unfortunately three of the four series of this camera were encumbered with electronic circuits problems. This relates to cameras with serial numbers below 1.600.000. However, those working after 20 years, or more, are either repaired or not likely to give problems. Although the origins of these Leicas and the Minoltas are the same, make no mistake, the Leica is worth higher price, and it has the Leica R lens mount.
Leica Summicron-R 50mm F2 lens. 3cam. ( 1985)
Leica’s series of lenses for single lens reflex cameras are designated R-series lenses, and are generally identified by the addition of the letter-R- after the lens name. The Leica R mount is a three lug bayonet mount with a 47mm flange focal distance. Although the R lens bayonet has remained substantially unchanged since its introduction in 1964, the R lenses can be divided into 4 general categories: one-cam lenses , being the lenses manufactured concurrently with and intended for use on the original Leica-flex body; two cam lenses , being the lenses manufactured concurrently with and intended for use on the Leica-flex SL and SL2 models, as well as the original Leica-flex three cam lenses, being the lenses manufactured concurrently with and intended to use on the Leica R3 and later models only.
Specifications:
Lens type: Standard lens.
Angle of view: 47 °
Variations: 1-cam, 2-cam, 3-cam, black and chrome.
Optica construction: 6 lenses in 4 groups.
F-stop range : f/2—f/16 in half stops.
Closest focusing distance : 50cm
Diaphragm setting type: 6 blades.
Filter type : Series E55
Accessories : Hood 12564.
Dimensions: 41x66mm
Weight : 290 gram