Parker 51/ 61  Classic, Argentina, c. 1973,  transition 51 - 61 fountain pen and 61 mechanical pencil set, both instruments in Parker 61 dark gray.The fountain pen is Parker 51 model on the dark gray of Parker 61. Both instruments with matching  frosting stainless steel with polished ring caps, pearlescent jewels, only different in the length of the arrow clips. The fountain pen has a 14 Kt solid gold nib fine point, aerometric filling. The mechanical pencil is actuated by twisting the cap. Near mint in original rare box. Most probably the very last Parker 51 produced in Argentina, with the one piece metal cover of the ink reservoir and the same Lucite gray color used for Parker 61 model. Extremely scarce #478 $USD 225
Parker 51, Argentina, 1965, set of fountain pen and ballpoint, Gold filled caps, converging lines pattern, midnight blue shell and barrels, pearlescent jewels. Fountain pen with 14 Kt solid gold nib, extrafine point, aerometric filling. Ballpoint with metal threads. Parker 51 ballpoints are extremelly scarce. Mint in original box. #807. Fountain pen only $USD 170, ballpoint only$USD 90, set in box $USD 250
Parker 51Classic plum, USA, 1948, barrel and shell in scarce plum color (not burgundy not cordovan), imprinted Made in USA 8 (the 8 parcially worn), lustraloy cap engraved Parker, pearlescent jewel, aerometric filling, 14 Kt solid gold nib medium point. Some wear from normal use, no damages, excellent, very scarce colour.#852 $USD 230
Parker 51, Argentina, 1965, set of fountain pen and ballpoint, Gold filled caps, converging lines pattern, navy gray shell and barrels, pearlescent jewels. Fountain pen with 14 Kt solid gold nib, extrafine point, aerometric filling. Ballpoint with metal threads. Parker 51 ballpoints are extremelly scarce. Mint in original box. #2530. Fountain pen only $USD 170, ballpoint only $USD 90, set in box $USD 250
Parker 51 Classic, Argentina, 1965, midnight black, lustraloy cap,  aerometric filling, extremely scarce stub nib. Excellent, extraordinary nib! #2433 $USD 160
Parker 51, Argentina, 1965, navy grey, frosty lustraloy cap, imprint  Parker Industria Argentina and Parker logo,  black jewel, fine-medium octanium nib,  aerometric filling, excellent. #693 $USD 75
Parker 51, Argentina, 1965, forest green (scarce color), frosty lustraloy cap, imprint  Parker Industria Argentina and Parker logo, black jewel, medium point octanium nib,  aerometric filling, excellent.#2459  USD 90

Parker 51 Custom, Argentina, 1970, burgundy, Gold filled cap, pearlescent jewel, aerometric filling, 14 Kt solid gold nib, generous medium point. Excellent, scarce color and nib size.  #2460 $USD 99

Parker 51 Classic, Argentina, 1965, midnight blue,  frosty lustraloy with polished ring cap, pearlescent jewel, chalk mark M on barrel indicating nib size, octanium nib medium point, aerometric filling, Mint. #1761 $USD 80
Parker 51, Argentina, 1965, india black, Gold filled cap, pearlescent jewel, aerometric filling, 14 Kt solid gold nib, extrafine point. Excellent to near mint.  #2460 $USD 95
Parker 51, Argentina, 1970, india black, Gold filled cap, original late matching black jewel, aerometric filling, octanium nib, extrafine point. Use micromarks, very good to excellent.  #2462 $USD 75
Parker 51 Classic, Argentina, 1965, black night, lustraloy cap,  aerometric aniversary filling, medium nib, Excellent. #478 $USD 60