Started by George Parker (1889) The Parker Pen Company is regarded as the worlds biggest pen company. Parker have produced such famous models as the Duofold (1921), Vacumatic (1932), The Parker "51" (1941), Jotter (1954), 61 (1956) and 75 (1964). The Parker '51', thought to be the most popular fountain pen ever produced. With a wide range of fountain pens, ball pens, rollerballs and pencils the Parker range has something for everyone. See below.