This working 1930s Mentmore made fountain pen is a bulb filler with a new sac and it is 129mm cap closed and 162mm cap posted in lengths. At 87+ years of age it does have patination and wear from this and use over time as shown in the close up pictures, which are part of the description. It has; Platignum Visi Ink, Pat. App .For, Made in England on the barrel and the MMC (Mentmore manufacturing Company)  nib performs well - fine. A nice example of a working vintage fountain pen.