The final version , Alticolor , was introduced in 1952 .
The final version , Alticolor , was discontinued in 1955 , marking the end of the nearly fifty - year - long public life of the Autochrome .
The final version , Alticolor , was introduced in 1952 and discontinued in 1955 , marking the end of the nearly fifty - year - long public life of the Autochrome .