Hi Nando,
Your source is mostlikely right, the engraving though still attractive (

) is indeed of lower quality than the top end locks of that era. The higher end versions would be andorned with engraving similar to the Saxony patrons shown here
http://www.vikingsword.com/vb/showthread.php?t=8540
See also:
http://www.vikingsword.com/vb/showth...xony+wheellock
http://www.vikingsword.com/vb/showth...xony+wheellock
The spring is far better than the first one, no idea what the maker was thinking

Still, and please correct me if my eyes deceive me, but the spring attachements inside the lock plate should have been at the beginning of the spring rather than near the bend.
It found a good home my friend