1955 Tanack IV-S by Tanaka
Optical Co., Japan. Despite being widely advertised in the USA,
the price went from $104 in 1955 to $65 in 1960. However much it cost,
the IV-S was well made. One nice feature not found on a screw mount
Leica is the hinged rear door for easy film loading. The lens is a
Sankyo Koki (Japan) W-Komura f2.8 /35mm wide angle.