I cannot find any information on this gun.I know Geco makes ammunition.Belonged to my uncle(ww2 vet) who died,and it came to me...left side of barrel,kal.22 long rifle 5.4mm... on top of barrel ,in front of up to 200m elevated sights,Original Geco Sportbuchse Mod28...on top of receiver in front of breech there is a large circled g with eco in the top middle and an emblem in the lower middle...Has swivels and probably a 3/4" leather sling...Barrel is close to bull barrel proportions and fairly long...I can find NO SAFTEY on this gun.Calling All Pro's. ANY ideas??Pictures will be coming soon...Stock in great shape although it was shellacked .Gun is in very good-fine condition for its age.There are other markings with crowns and the letters *B*U...all help appreciated, Thanks Gator60