So my mum bought an antique sewing machine many years ago (we live in Australia and it was bought here, but presumably imported at some point prior). It had locked drawers. When we finally opened them, it contained some letters all written in this language.
I've included the best one I could, that has what seems to be a date at the top (21/09 1928), so I assume it can be used to orient the page correctly. Looks like it may be a right-to-left language as well, as it seems to stick to the right margin, I haven't seen an arabic that looks like this... After a bit of searching, could be Yiddish?
Also looks like it may be either in some form of calligraphy, or really shitty handwriting.
Crossposted from /r/translator, but figured maybe someone here might be able to assist.
Let's open this safe, Reddit!
I would guess the language is likely Yiddish. I don't know how to read some of the cursive, but I see that the contains both the double vav (two straight vertical lines) and the double yud (two commas up top.) Those letters don't really exist in modern Hebrew from my knowledge but are common in Yiddish
The letters seem to be Hebrew cursive to me. I'm not anywhere close to being proficient in reading modern Hebrew let alone Hebrew cursive (and handwriting in general is more difficult). I do spend a significant amount of time in Israel due to my specialist field, so I have indeed seen a lot of Hebrew cursive. They use it on business signs and in advertisements a lot. But handwriting is pretty difficult to read when it's not in your native tongue.
I cannot give you a translation of the letter, my modern Hebrew knowledge is far too limited.
Edit: linky link
Further edit: Can't tell you what language the words are recording, just that the alphabet appears to be Hebrew cursive. This could indeed be Yiddish, or could be Modern Hebrew, which was revived in the late 19th and early 20th century. The words at the top appear to be in the Latin alphabet.
Try reposting in /r/yiddish.
Very interesting looking and pretty, whatever it is.
It says "Singer."