Not too long ago I was fortunate enough to get this GW16 through a trade. It arrived a few days ago.
After cleaning the grime off I give it the once over and took some pics.
The spring is still strong - it shot a wooden dowel rod a few feet. There are some pieces missing that though - the Schieſsstockkopf (shooting stock head), Schlagbolzan (firing pin) and Zwischenstück (spacer connecting piece). These are circled in the first pic. So, if any of you out there might have these sitting around, or know someone who does, please let me know!