In the mid-teens, as UK business flourished, there was intense competition in the US, and Mabie Todd decided to sell European rights to Mabie Todd England. In 1919, Mabie Todd US was sold to a British group. The company now was entirely British owned, although the US division continued producing pens until 1938.

     The early Swan line included hard rubber and ornate metal covered eyedroppers. In the late-teens pencils were introduced under the "Fyne Point" name. In 1924 the Swan "Eternal" was introduced to compete with competitor’s lifetime guaranteed models. Plastic was introduced in 1927. Mabie Todd also sold a middle-of -the-line model, the "Swallow" and a student line, the "Blackbird."

     In 1932 a patent was granted for the "Leverless" pen. A knob on the bottom of the barrel, which was connected to a metal bar, was twisted to deflate the bladder and returned to fill the pen. This was a popular feature which continued in production for many years.

     In 1936 the "Visofil" was introduced -- Swan’s answer to the Vacumatic and Inkvue. The plunger mechanism was hidden inside the bottom of the pen. Turning the blind cap mechanically extends the plunger rod. Another version was more similar to the Vacumatic.

     MT utilized many unique and beautiful plastics for their pens, including snakeskin, lizardskin, pastels, mottled, and solids.