Fifty years ago, when I was meeting my future in-laws for the first time, I noticed her father's guitar. It was a Hensel. Made in Toronto for the department store market in the 30s by a German immigrant who had switched over from violins. Her father bought it used for $5 in the 40s and it had not had a good life. With no case and living in a farmhouse with a central furnace. The dry air had cracked the back, loosened some back braces and the saddle was lifting. Years later my MIL bought him a classical guitar which was easier for him to play and the Hensel disappeared. 6 or 7 years ago, after my FIL had died, I was doing some work for my MIL, and came across the old guitar sealed in garbage bags. I asked if I might try to do something with the old instrument and she said she would be pleased if I tried.
The cracks in the back had curled a bit and needed steam to get them close to flat and cleats to secure the joints. I made a new ladder brace for the back and re-glued the saddle. Re-stringing was nerve wracking but everything went well and amazingly enough the action was not bad and the old parlor guitar lived again. My MIL was very pleased.
These days it is tuned DADGAD, with a capo on the 5th fret. I use it for some Stan Rogers songs and others in that tuning.
Here is the old girl. Not bad for 90!
Best
Les