Thank you all for your kind and motivating comments
This is piece that I love to play. I used to bump in it sometimes for several years, but some weeks ago I decided to really give it a chance. It's really fun to play it
Scott, regarding your question. This is a guitar made (or sold) in a Swiss workshop (Foetish Frères), in early XXth century (not sure when...). I've tried to contact people in Switzerland (even the remaining Foetisch family), but I didn't get much info. The shop continued until the seventies, but at the time they didn't produced instruments anymore for a long time. So, I really don't know if the the guitar was made in the Foetish workshop, or if was just tagged.
The founder of the workshop was Edouard Foetish, violin maker. His name features in some books and in the MIMO.
I bought in a auction site, and the photos were taken by the seller.
He was an antiques seller and had a Foetish shop catalogue. The guitar was in fair condition, but I took it to a luthier friend friend to some restoration. Some cracks, the bridge, the tail pin, refretted, the scale was rectified, and the some shellac. This is not a great instrument, but has "that old sound". It a little bit narrow for my fingers, but they get used. I feel that in more difficult pieces, like in some passages of this Giuliani piece.
I posted some photos in the forum here