From my collection is a Parker 51 Vacumatic in gray color. Length is 5 7/16 inches capped. Nib is Fine. Cap is lustraloy. Date Code on barrel I can clearly see number 6. Condition: normal wear, scratches, no dents on lustraloy cap, missing jewel on cap, will need a new sac soon, writes very smoothly. Purchased this 51 years ago and put it away. This month I looked and saw that the jewel on the cap had snapped off. It is a mystery to me how it happened. Fills with water and writes. Includes Parker box. Selling to downsize. Asking $50.00 plus $10.00 shipping within continental U.S.A. Pics upcoming