Hi! So I believe I have a pretty rare Meisterstuck as I can not find it anywhere online! Essentially it is the same as this pen, except its a rollerball. https://www.penporium.com/MONTBLANC-144-SOLITAIRE-SOLID-GOLD-FOUNTAIN-PEN-p/3009.htm The closest thing I can find to my pen is actually from an image posted on this very forum! https://www.fountainpennetwork.com/forum/uploads/imgs/fpn_1314297331__aumb.jpg My pen is very similar to the "163SG" except it does not have the black portion on the bottom, the design continues all the way down the pen. Does anyone have any information on my pen? I am also wondering how much it would go for in the used marker in good condition. Photos of the pen: https://i.imgur.com/41DHPRC.jpg https://i.imgur.com/DFcd2sp.jpg https://i.imgur.com/Qk0jOLR.jpg If any other angle would help please let me know! Thanks!