I still have my fratelli crosio super junior, 80 bass, 2 way keyboard vocal, a Stradella, with the crest. It was bought in 1964 for my 8th birthday. Only once overhauled, retuned, a few skins re-tensioned. It's a legendary brand. I have a pupil who has just bought a 120 bass, 3 voices right hand, 2 registers left hand. I tried it out. Frankly, 1000 €, well tuned recently, it's great. Why are there so many of them on the market: the brand died out about ten years ago, the owners are getting old, can't play anymore, there must have been a time when one family in 5 had a bass.