11302: Parker 51: Cedar Blue first-year, smooth sterling silver cap with imprint at top, metal jewels appear to be silver rather than aluminum; good blind cap imprint with 2nd quarter date code, aluminum Speedline filler with diamond at end of plunger. Neatly cut oval depression on hood behind and in line with the nib appears to be an early form of nib position indicator, as later adopted for the 61, but whether factory or aftermarket cannot be determined. Name on barrel, a few pinhead dings to the cap, slight hood shrinkage.
DATE: 1941 • CONDITION: fine • NIB: fine • $785
14462: Parker 51 demonstrator: rare first-year black double-jewel with clear hood, red collector, barrel marked "DEMONSTRATOR", metal Speedline filler, aluminum jewels, imprint on blind cap, "wedding band" Lustraloy cap with long clutch. Small dings under the clip, imprint worn but mostly legible.
DATE: 1941 • CONDITION: fine • NIB: fine • $895
14129: Parker 51 pencil: black with crisp 1/7.5 12K gold filled cap with fine parallel lines, 13.1 cm long, uses .9 mm lead.
DATE: c. 1945 • CONDITION: exc • $80
13537: Parker 51 desk set: elegant midcentury modern ensemble with rare Red Band button-filler desk pen, sharp barrel imprint with 3rd quarter date code; original synthetic sac is shown in the photo but has been replaced, original sac will be included; base is hefty gold-finished metal, 12.5 cm by 11.3 cm, very clean with only light marks on the black center panel, labels on bottom perfect. "Magnetix" swiveling socket is a Moholy-Nagy design for Parker. Red Band 51s are extraordinarily hard to find, as they were recalled almost immediately upon release.
DATE: 1946 • CONDITION: exc-near mint • NIB: fine • $825
14695: Parker 51 pencil: black twist-action, 13.1 cm long, chrome plated trim, uncommon Lustraloy cap with wide raised band with fine parallel lines patterning, uses .9 mm lead.
DATE: c. 1946 • CONDITION: fine • $95
13908: Parker 51 demonstrator: transparent Lucite Vac-filler, Lustraloy cap, chrome plated trim, clean barrel imprint with 4th quarter date code. These pens were not sold to the public, made for a brief period in 1947-48 for dealers, salesmen, and repairmen only.
DATE: 1947 • CONDITION: fine • NIB: medium fine • $565
13855: Parker 51 demonstrator: transparent Vac-filler, USA production with good barrel imprint with 3rd quarter date code, 1/10 16K gold filled cap in grouped parallel lines pattern, clip however is distinctively Canadian with high Blue Diamond, box is also not USA; one stress line in blind cap (see detail).
DATE: 1947 • CONDITION: fine-exc • NIB: medium fine • $525
13883: Parker 51 demonstrator: transparent Vac-filler, frosty two-tone Lustraloy cap, gold filled Blue Diamond clip, good barrel imprint with 3rd quarter date code; condition sound, noting scratches to interior from overaggressive cleaning of old diaphragm residue, fine stress marks on shell skirt (see details).
DATE: 1947 • CONDITION: fine • NIB: medium fine • $465
14596: Parker 51 Demi: dark blue Vac-filler, two-tone Lustraloy cap, chrome plated trim, 12.1 cm long, clean barrel imprint with 1st quarter date code, stress marks in barrel around filler unit do not affect function, commonly seen on Vac-filling 51s and apparent only under bright light and magnification.
DATE: 1948 • CONDITION: fine* • NIB: medium fine • $145
13875: Parker 51 demonstrator: transparent Vac-filler with Lustraloy cap, gold filled Blue Diamond clip, barrel imprint has been largely polished away but 4th quarter date code clearly visible; one stress mark over diaphragm seat, does not affect function (see detail), blue ink residue inside pen has not been fully removed, cap jewel a bit rough.
DATE: 1948 • CONDITION: fine • NIB: fine • $485
12984: Parker 51 Demi Princess: extremely rare gold filled Aerometric filler, 12.5 cm long, with faceted "jewels" set into the ends and around the upper cap; shallow bumps to side of cap, otherwise excellent.
DATE: c. 1950 • CONDITION: fine • NIB: fine • $2250
14712: Parker 51 Demi injector pencil: Cocoa with frosty two-tone Lustraloy cap, chrome plated trim, 12 cm long, crisp imprint with 1st quarter date code, uses .9 mm lead.
DATE: 1951 • CONDITION: near mint • $85
14193: Parker 51 Special desk set: black Aerometric filler with chrome trim, Octanium nib, 16.7 cm long, massive special presentation base in solid granite, 24.2 cm (9.5 inches) wide, presented to Congressman Paul Brown (1880-1961) by the Elberton, Georgia Granite Association.
DATE: c. 1958 • CONDITION: exc-near mint • NIB: broad • $275
5828: Parker 51 pencil lead refills: 12 leads in a stoppered glass tube, 8 cm long, made in England, label reads "for Parker '51'/ROTARY PENCIL", with Parker "halo" mark; many available, all "B" hardness.
DATE: c. 1964 • CONDITION: mint • $6
8424: Parker 51 Mark III: late black Aerometric filler, South American production, barrel with Parker numbers indicating either a prototype or an archived sample; Lustraloy cap with unusual top button, fully imprinted, made in Brazil, filler housing made in Argentina. Octanium nib, two inlaid metal dots in hood.
DATE: c. 1970 • CONDITION: near mint • NIB: medium fine • $250
13914: Parker/Kullock 51 demonstrator: a customized transparent pen using modern acrylic with Parker parts from the 1940s; 13.8 cm long, chrome plated trim, modern metal clip jewel, nib is from a Parker 61.
DATE: c. 2000/1948 • CONDITION: fine-exc • NIB: fine • $250