The Smith Premier is a well-engineered, much-imitated typewriter with a full keyboard (separate keys for upper- and lower-case letters) and an understroke mechanism (it types on the bottom of the platen). Smith Premiers also feature a built-in cleaning brush for the type.
The SP #1 appeared in 1890, the #2 in 1896. In 1908 Smith Premier introduced the only full-keyboard frontstroke typewriter ever made, the #10.