eBay
A range of high quality Lighthouse Vario stock sheets to take stamps.
 
Select the size from the drop down menu:
 
4S - 4 strips of 63mm
5S - 5 strips of 51mm
6S - 6 strips of 39mm
7S - 7 strips of 33mm
8S - 8 strips of 29mm
Sold in packs of 5 with a black background.  
Double sided, so quite a large capacity.
Highly transparent with welded pockets for extra security.
All materials are acid free and contain no harmful softeners.
Designed specifically for the Vario albums but they are multi-punchedso will fit a variety of albums.  
 
Overall page size 216mm x 280mm (almost A4 size).