Leica I – fixed lens

Produced from 1925 to 1932 in about 60,000 pcs. it is the first Leica camera to be launched on the market. The first examples had the times 1/25, 1/40, 1/60, 1/100, 1/200, 1/500, then replaced with 1/20, 1/30, 1/40, 1/60, 1 / 100, 1/200, 1/500. 
The first 300 pcs. were equipped with the Anastigmat 50mm f3.5, later they were equipped with Elmax 50mm f3.5, of Elmar 50mm f3.5, of Hektor 50mm f2.5

Leica Luxus – fixed lens

Produced between 1929 and 1930 in only 60 copies, it is the gold plated version and covered in lizard skin in the red, green, blue and brown colors of the Leica I with fixed optics. 
Equipped with a gold plated Elmar 50mm f3.5 lens, it was sold in a crocodile leather trunk in the same color as the upholstery.

Leica Dial-Compur e Ring-Compur

Produced between 1926 and 1931, this is a particular version of Leica I with a fixed optic equipped with a central shutter. In this device, the time ring has been replaced by a visible rotating disk and the shutter button is located on the lens. 638 pcs of this model named Dial-Compur were produced equipped with adjustment button and 969 pcs. named Ring-Compur with ring nut. In the picture beside the Ring-Compur model.

Leica I 

It’s the first 35mm camera with interchangeable optics. About 10,000 pieces were produced from 1930 until 1933. The first 3,000 pieces had the screw coupling not set to zero. The following specimens provided for the graft adjusted to zero which did not require the preventive calibration of the objective. The times start from 1/20 and reach up 1/500. The finish is only black. The case has no eyelets for the strap.

Leica Luxus

It is the gold plated version of the Leica I, covered in lizard skin in green, red, blue and brown colors. Only 35 pcs were produced in the interchangeable optics version. A gold-plated Elmar 50mm f3.5 or a gold-plated Hector 50mm f2.5 lens were provided with it besides a crocodile leather case in the same color as the camera casing.

Leica II

Produced from 1932 to 1948, it is the first Leica camera to be equipped with a built-in rangefinder coupled to the optics and available in either a black or chrome finish. The shell is made of two pieces, the camera is equipped with the time ring from 1/20 to 1/500 and eyepieces spaced apart.

It too has no eyelets for the strap and it was produced in over 52,500 copies.

Leica II NewYork 

in 1947, 200 Leica II cameras were assembled from the New York factory using the Leica III case which also included the long-time button and the appropriate hole was closed with a metal disk fixed with three screws. Furthermore, since the case of the Leica III was used for this model, the eyelets for the strap are present. 
Due to the limited production of 200 pcs. it is a fairly rare device.

Leica Standard

The Leica Standard, produced in approximately 27,000 pcs., stands out from the Leica I for the availability of the chrome finish in addition to the black finish and to have the removable film rewind button. The production period is 1932-1950. In 1948 a few thousand pieces in chrome finish were made with the case of the Leica III, had the closing disk and took the name of Leica Standard New York.