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The items below are listed alphabetically by maker, with featured items grouped at the top. You can also keep track of our new items by RSS 
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One of my first interests when I began collecting pens was demonstrators. Those featured here were examples bought decades ago for my personal collection, with most being uncommon to the point that I've seen only a handful of others in all the years since.
16455: Eversharp Symphony demonstrator: rare transparent lever-filler, 13.8 cm long, gold filled trim, not made for public sale; name on barrel, crack in back of cap does not affect function; even feed is transparent. Sac has been removed, a new one can be installed upon request.
DATE: c. 1952 • CONDITION: fine* • NIB: fine • $465
16457: Parker Vacumatic demonstrator: factory cutaway, 12.4 cm long, silver pearl laminate, barrel has 4th quarter 1935 imprint, lockdown filler, bandless cap with early-style skewed pattern; this is a known configuration, correct without nib or end jewels. Original hardened sac has not been replaced.
DATE: c. 1935 • CONDITION: near mint • SOLD
16460: Parker 51 demonstrator: rare first-year in Cordovan with transparent shell and blind cap, gold filled trim, "wedding band" cap in stainless steel with inlaid band, Blue Diamond clip, long internal clutch, pearl jewel; blind cap has mostly legible imprint at bottom edge, aluminum jewel. Aluminum Speedline filler, two-tone clutch ring. One shallow pinhead ding to side of cap, clip mark (see details), a good clean example.
DATE: 1941 • CONDITION: fine • NIB: medium fine • SOLD
16456: Sheaffer Balance demonstrator: black plunger-filler with transparent barrel, circular windows cut into cap; 13.8 cm long, gold filled trim; no nib, as is typical with demonstrators of the era.
DATE: c. 1938 • CONDITION: exc • SOLD
16454: Sheaffer Touchdown Sentinel Deluxe: black pneumatic-filler, 13.4 cm long, stainless steel cap with gold filled trim, White Dot, rare salesman's sample version with beautifully preserved "SHEAFFER'S RULE OF FOUR" transfer print on barrel explaining the special features of the pen. New old stock, original nib label intact, sac and seals have not been replaced.
DATE: c. 1950 • CONDITION: mint* • NIB: medium • SOLD
16458: Waterman demonstrator: transparent acrylic lever-filler, 13.25 cm long, gold filled trim, #5 nib; sac has been removed but a new one can be installed upon request.
DATE: c. 1949 • CONDITION: exc* • NIB: medium • SOLD
16445: Bossert and Erhard Cana in box: sterling silver with yellow guilloche enamel, 13.4 cm long, cartridge or converter (two converters included), two-tone 18K gold nib is smooth and wet with a bit of spring. Like new, hardshell box shows some handling scuffs and wear, as does the outer cardboard box. With guarantee certificate, nib has been tuned and smoothed by a leading specialist. Though their own pens are less well known, B and E have for years supplied enamel and precious metal work to Montblanc, Michel Perchin, and others.
DATE: c. 1995 • CONDITION: near mint • NIB: broad semiflex • $650
16450: Butler extending pencil: sterling silver, 9.5 cm long closed, 12.3 cm extended, left part of maker's mark worn away, "MAKER. LONDON" still visible, characteristic inset steel tip, uses 1.0 mm lead, one triangular leaf missing on slider, multiple small dings; purple faceted seal stone in six-lobed crown piece of unusual design.
DATE: c. 1835 • CONDITION: G* • $150
16438: Carter pencil: red hard rubber barrel, 13.2 cm long, nickel plated trim, uses 1.1 mm lead; tool marks on cone (see detail).
DATE: c. 1925 • CONDITION: VG • $60
16437: Conklin 26P: black chased hard rubber ringtop lever-filler, 11.35 cm long, gold filled trim, crisp and glossy, has not been reblackened, sharp imprints, flexible long-tined #2 Conklin Toledo nib.
DATE: c. 1923 • CONDITION: exc • NIB: fine flex • $120
16444: Cross pencil: gold plated trim, black chased hard rubber barrel sleeve, 7.2 cm long, 9.5 cm with extending tail pulled out, nozzle with August 29, 1882 patent date and Cross imprints; uses standard 2 mm lead, extends and retracts, scattered dings to metal ends do not affect function.
DATE: c. 1885 • CONDITION: G-VG • $85
16446: Cross (?) clutch pencil: gold filled ringtop, 7.9 cm long, uses 3 mm thick lead; unmarked, no mechanical lead advance function, crown is twisted to clamp and unclamp lead.
DATE: c. 1900 • CONDITION: exc • $60
16464: Eversharp Bantam set in box: red candycane stripe bulb-filler, 9.9 cm long, gold plated trim, perfect transparency, plated steel nib shows some typical wear; matching pencil uses 1.1 mm lead, like new noting scratch on barrel by imprint.
DATE: c. 1934 • CONDITION: exc-near mint • NIB: medium • $150
16449: Parker Duofold Junior set in box: red and silver striped Vac-filler, 12.3 cm long, gold filled trim, bold imprint with 3rd quarter date code, transparency as new, matching pencil uses .9 mm lead, has 2nd quarter date code; outstanding condition, a couple of scratches to the filler plunger, very slight swelling of barrel over filler unit.
DATE: 1941 • CONDITION: exc-near mint • NIB: medium semiflex • $250
16468: Parker Vacumatic Major: blue pearl laminate, 12.8 cm long, gold filled over silver trim, Blue Diamond clip, barrel imprint with 3rd quarter date code, wartime all-plastic filler with plunger with diamond imprint on end; fine transparency, near-invisible cap lip crack repair, small shallow divot on back of cap (see detail), overall appearance excellent.
DATE: 1944 • CONDITION: VG-fine* • NIB: medium fine • $165
16442: Parker 51: dark blue Vac-filler, Lustraloy cap, gold filled Blue Diamond clip, strong barrel imprint with 2nd quarter date code.
DATE: 1946 • CONDITION: fine-exc • NIB: medium • $175
16465: Parker Victory: dark blue button-filler, 13.3 cm long, gold filled trim, made in England, Christian Olsen anchor Danish import mark below main imprint; smooth wet Newhaven-made nib has a hairline from the vent hole which should be stable, as the nib is more firm than flexible and its gold is quite thick.
DATE: c. 1946 • CONDITION: fine* • NIB: medium stub • $225
16467: Parker Victory: grey button-filler, 13.4 cm long, gold filled trim, made in England, darkened to olive, scratch on blind cap and brassing on cap bands, smooth and lively Newhaven-made nib.
DATE: c. 1948 • CONDITION: VG • NIB: medium semiflex • $165
16439: Parker 51 Special: burgundy Aerometric filler, 13.7 cm long, polished stainless steel cap, chrome plated trim, black cap jewel, barrel imprint with 3rd quarter date code; smooth Octanium alloy nib, new old stock with never-filled sac, some storage and handling wear.
DATE: 1951 • CONDITION: exc-near mint • NIB: medium fine • $165
16461: Parker 51: black Aerometric filler, frosty Lustraloy cap with polished rim, original price sticker on barrel, smooth nib with good ink flow. Fully reconditioned with new sac, softened sac nipple replaced.
DATE: c. 1951 • CONDITION: exc-near mint • NIB: medium • $175
16463: Redipoint Aristocrat pencil: octagonal mottled hard rubber barrel, 14.2 cm long, gold filled trim, uses 1.1 mm lead; not marked "Aristocrat", appears to be a sales sample, imprinted "STYLE NO. 2528" as well as "THE HOME INSURANCE CO.".
DATE: c. 1926 • CONDITION: exc • $80
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