AV 6 Slot machine booklet #1566 ov2 (cover h1 48mm)

AV 6 with one pane: 0,30 (grey) + T ( / ) + 0,30 (grey) + T ( / ) + 0,40 (orange).
Coat of arms lion type II m63 booklets.
Batch number 1566.
T = empty, perforated stamp square with coloured oblique line printed.
ov2 = guide line 2 (coloured guide line or 'beam' or part thereof on pane lower left corner).