The Thompson sorts caster, a competitor to the Monotype sorts caster, went into commercial production in 1908.
Thompson sold the caster to the Lanston Monotype Co. in 1929, where production continued in England until 1967.
The Thompson sorts caster is used to cast type for hand composition.
It casts a single “sort” (one size of one character of one typeface) using flat matrices, Linotype matrices or Ludlow matrices.
Our caster, Serial #120, is from the foundry of C. Christopher Stern.
An unverified rumor offers speculation that the Thompson Serial #120 may have been given to Mr. Thompson at the time of sale of his company to the Lanston Monotype Co.