I have one quite similar to the one Guest Autoharpist describes above ~~ it is the one that features on several videos on my Youtube channel ~~ but mine has 25 strings, the bottom five numbered with Roman numerals I-V, the others 1-20 in Arabic numbers. I too know nothing of its origin ~ can't even remember where I got it; by inheritance possibly, but it was a long while ago anyhow. Mine carries no maker's name or date or any such either, and I too wonder if there is enough evidence in Aut's and my descriptions to give anybody any clue.