Silver is simply an older name for the Silver Reed company. Some of the same model numbers can be marked as Singer, Studio, and Silver Reed. Thus, check the pages for these brand names if you do not see a particular model number.
Standard gauge:
Basic/manual models
Turn-knob-based patterning
Pros and Cons of single bed Singer machines with turn-knob patterning capabilities are listed here.
Punchcard-based patterning
Silver SK250L, lace only
Silver SK311, card-matic
Silver SK312, “punch-card A”
Silver SK322, built-in knit leader
Silver SK325, built-in knit leader
Silver SK326, built-in knit leader
Silver SK327, built-in knit leader
Silver SK328, built-in knit leader
Silver SK329
Silver SK330, built-in knit leader
Silver SK360, built-in knit leader
Electronic patterning
Silver SK500
Bulky machines:
Silver SK120, 9 mm, manual