The serial number of this pen is on the uppermost ring:#EB 184396. This can be dated to exactly 1991 as it is both marked W-Germany and has a serial number. The cover for the manual and the black of case does have wear due to age and the way it had been stored. I tried to show in pictures. When you use First Class International we cannot track!Please notify us of any problems within 30 days of receipt of item. The item "Vintage 1991 Montblanc Meisterstuck 4810 Fountain Pen W. Germany NOS Case MIB" is in sale since Tuesday, October 15, 2019. This item is in the category "Collectibles\Pens & Writing Instruments\Pens\Fountain Pens\Montblanc". The seller is "mikeysantiq" and is located in Omaha, Nebraska. This item can be shipped worldwide.