There is some confusion over the bass sax first being made in ophicleide form. Maybe that comes form the 1846 patent sketch itself:
http://www.classicsax.com/asi/saxinfo2.pdf
http://www.classicsax.com/asi/saxinfo2.pdf
... the website I glommed the pic from did identify the horn as a Pleisson, with a manufacture year of 1900 and listed that it was for sale. Unfortunately, Gunter Dullat hasn't returned my e-mails (probably because I don't write in German) and the gentleman that was selling the Pelisson has passed away (I think: I had gotten two responses from someone representing the seller saying that he was ill and then nothing else), so I can't confirm the pitch -- but if you see another website showing this pic, it's not an A. Sax instrument.That baritone picture was originally published in Saxophone, Erfindung und Entwicklung einer Musikinstrumenten-Familie und ihre bedeutenden Hersteller (whew!) by Gunter Dullat. The book is not entirely accurate, but since Dullat actually own[ed] the horn, I'm sure he has at least correctly identified the key in which it is pitched [F]. It is the only baritone in F that I know of that still exists, made by 'PELISSON FRERES & Cie., SYSTEME GEORGE BREVETE S.G.D.G.' It was made around 1900, and even though it's not that old, I sure wish I could find one.