Here's a link to a catalogue for Central Lithuania
http://www.stampworld.com/stamps/Ce...l-Lithuania/Any CL stamps on a bright white thickish paper is a forgery made for the packet trade. That 5f imperf 1st stamp, 3rd row looks a likely culprit even at this low level of scan. This stamp is part of a series of 8 & is normally imperf or perf 14, but they were also privately perforated 11½, again, for the philatelic trade