The coffee grinders made by Astoria are not really made by Astoria. These coffee grinders are made by the Italian grinder brand Mazzer. This is not uncommon that a specialized company manufactures a item and gets a different label put on to it.
Models the Mazzer company produces for Astoria are only the electronic versions. So there are no doser versions available currently. Models Astoria has are the Astoria Robur, Astoria Super Jolly, Astoria Major and the Astoria Mini.
In the past Astoria did sell doser versions, such as the Astoria Super Jolly Timer, Astoria Super Jolly Automatic, Astoria Major, Astoria Robur and the Astoria Mini.