See also:
https://forum.vintageairgunsgallery.com/fionda/
https://forum.vintageairgunsgallery.com/tyrol/tyrol-comatic-air-rifle/
https://forum.vintageairgunsgallery.com/zamas/
https://forum.vintageairgunsgallery.com/golondrina-argentina/
https://forum.vintageairgunsgallery.com/loscar-italy/