I recently bought a 44 Key English Aeola. It has raised ebony ends and dates from around 1909, a time which unfortunately the Wheatstone records are missing. While I was in some way frustrated that it didn't have the full 48 keys, I couldn't resist as the sound and response were better than anything I had ever played. It so light, yet loud and effortless to play. I'm guessing this may be a unique experiment from Wheatstone? I certainly can't find records of another 44 key except from the earliest days. The advantage of dispensing with the top A B Bb C gives more space to create a more evenly designed instrument, allowing a wonderful response and sound by removing little-used reeds. It may be that it was unsuccessful because the 48 key model was the standard. Any thoughts anyone.....