DETAILS: Very nice pen in as New condition from a personal collection ! "51" model MKII from early 1950's. Short feathered arrow clip. Cap insignia style, 1/10 12K gold filled with alternating grouped in five very fine lines converging on the top. Cap lip engraved with 51 Logo both sides (see pictures). Nice Ebony Black plastic shiny body. Gold plated trim and gray mother-of-pearl conical cap jewel. 14K/585 solid gold NIB, probably "F" fine tip (looks so, not marked outside). With aerometric shiny stainless steel blade pressure filler ("4 times"). Marked engraved on cap lip: "Logo - MADE IN USA - 1/10 12K GOLD FILLED". Engraved clip base ring "3" (photo). Perfectly clean, shiny and working 100%! No case or instructions supplied, sorry, but item will be carefully packed for safe shipping ! All original and authentic. Please consider the pictures as part of the description as they show the exact item that will be purchased. CONDITION: Pen is used, but really as New with absolutely no wear marks anywhere and no flaws (inspected in detail) ! All very shiny. Clip very nice with no deformations or wear. No wear or brassing to the gold plating cap an clip. MOP jewel as new, unblemished, with no yellowing and no cracks. No cracks anywhere. No repairs. No deformations. Cap closes smoothly and holds tight both closed and posted. Clip is perfectly straight aligned and adjusts firmly to the cap surface. The Nib is aligned and perfect with plenty iridium. Filling up easily with good ink amount. Writing perfectly and smoothly with good ink flow (tested). No leaks or blots. Very crisp engravings barrel and cap. No personal engravings. In perfect working condition. PACKING & SHIPPING: Worldwide - Low Cost ! Package Includes: Item as described and carefully packed together with Catawiki Invoice. I will post this Item by Registered Mail (with Tracking Number, to be provided on Catawiki item page).