Top of the Reciever is marked HWZ stialized with a large Z and the H and W on either side in a smaller font.
Left Side of the Reciever is marked "HWZ Mod. 29"
Left side of barrel "Calibre 6/22 Long" although lond rifles fit without engraving the bullet. Many of the BSA's I have are marked long even though they are long rifle chambers so this might be a European thing in the early 1900's.
Sorry, but that is all I have to go on.
MI-shooter