Geco sport buchse mod 33 (5.4mm .22 Cal)

[larog72]

I just dug out one of my old guns and am having alot of trouble finding any information about it, believe it or not, nothing turns up w/ the model # I have found the Geco sport buchse models 28 & 37 but nothing on the model 33 (which is what I have) almost as if it doesnt exist! If anyone knows anything about this gun I would appreciate hearing from you. Thanks!