Its production spanned from 1941 to the early 1970s.
The Parker Pen Company was founded by George Safford Parker in 1888 in Janesville, Wisconsin.
At the same time Parker also replaced the metal Speedline version of the Vacumatic filling system with a plastic Vacumatic filler.
The Parker “51,” produced by the Parker Pen Company, is considered by many collectors to be the best pen ever made. To this day, its shape and design remain widely recognizable and it seems to never become dated. My pursuit includes its history and advertising ephemera.
Out of the three pens, the “51” always caught my attention, with its classic lines and elegant look.
I often tried to fill it and write with it, but its mangled nib had seen better days.
Parker Jack-Knife Safety #24, stub, 4 9/16 inches closed, smooth black hard rubber, c1920, smooth fully flexible Med Parker #4 nib w/scroll, nib has full iridium, fairly crisp imprints, barrel imprint was hard to capture, restored, Exc, Parker Jack-Knife Safety #20, black hard rubber, c1920, 5 5/16 inches closed, very crisp pen, blind cap marked #20, smooth fully flexible broad stub Parker #2 nib w/scroll, nib is 100% original w/ full iridium, crisp imprints, restored, Exc , Parker 61 Presidential Set, 18k solid gold, c1963, English, Barley pattern, boxed, box marked 'Trio', capillary filler unit shows that the FP has never been inked, Med nib, all three pieces are flawless and fully functional, clips, caps, & barrels all fully hallmarked, Mint, Parker Senior Bandless Duofold Set, c1923, 5 1/2 inches closed, RHR, both pieces exceptionally clean, blind cap clearly stamped with '6', firm Med nib, pencil works great, flawless crown, unused original eraser, restored, $1750, Parker 51 Pencil, 1950s, black, std sz model (not demi), 5 1/4 inches, no dings or dents but typical use marks and a rim of brassing to edge of cap lip, converging line pattern, original eraser worn, pearl jewel, working, VG, Parker 51 Aerometric Tool, 1949, original Parker tool (not a repro), standard size tool (not demi), clean, fully functional condition, this is NOT a Vac tool - this tool is used to grasp the rear threads of the barrel joiner unit so the hood can be removed - pen shown for illustration purposes and is not included, Exc condition, $250, Parker 51 Pencil, 1950s, Teal (pic is a bit darker than the pencil), std sz model (not demi), 5 1/4 inches, flawless gold filled cap w/ converging line pattern, original eraser, pearl jewel, working, Exc , Parker Junior Duofold, c1931, 4 3/4 inches closed, Autograph model, certainly a special order pen, engraved 'Member Chicago All Conference Team November 1931', cap band engraved 'Charles A Michael', some brassing to clip ball & clip edges, Med firm numbered Duofold nib, restored, Exc, Parker Geometric Duofold Set, 1939 date code, largest model, 5 inches closed, brassing to edges of pen clip - rest of trim is perfect on both pieces, flawless color, smooth firm Med nib, pencil works perfect and is likewise stunning w/ matching 1939 date code, Parker Junior Mandarin Duofold, c1928, 4 9/16 inches closed, brassing to clip ball, cap bands well brassed, barrel slightly darkened, tiny crack between the cap bands (see last pic) - this crack does NOT extend outside the cap bands, Fine firm nib, restored, VG, Parker 75 Presidential Set, 14k solid gold, c1967, US Made, smooth pattern, dimpled ends, inner & outer boxes, complete w/ converter, point adjuster tool, & ink cartridges, felt sleeve for FP still has 'Fine' sticker on it, uninked, Fine nib, both pieces Mint, $2750, Parker Keepsake 75, c1970s, smooth sterling cap & barrel, rare white clip & white dimpled ends, M nib, serial number on section, converter, pen is flawless, working, perhaps a prototype of some sort, NM , $900, Parker Performance Award Knife by Tiffany, sterling silver, clasp is fully marked Tiffany & Co & Sterling, includes Tiffany felt pouch and box, c1960s, knife is 2 3/4 inches closed, engraved with Parker halo & the initials D.