Deutscher Panzer 38(t) Ausführung S im Deutschen Panzermuseum Munster. The "Y"-like and ghost designs are emblems of 7th Panzer Division.  Numbering on the side of the turret identifies the tank.  Colored rings around the gun barrel indicate victories over enemy vehicles.
Werner Willmann
CC BY 2.5
<span class="int-own-work" lang="en">Own work</span>