50 inches" ?
In that case I'd say it is fairly current work done as a wall decoration. Pity.
Script is hanacaraka ("a" is pronounced as a back of throat "a", sounds like "o"), Javanese script, or "aksara Jawa". I cannot read this. I can figure it out by using references and a bit of guess work. Quite difficult these days to find somebody who can read it fluently.
Couple of online references:-
http://www.omniglot.com/writing/javanese.htm
https://en.wikipedia.org/wiki/Javanese_script
https://www.google.com.au/search?q=h...odVfMGdQ&dpr=1
http://www.gimonca.com/indonesia/huruf_jawa.html
Bear in mind that as with any script the letters are often given variant forms by individual writers, so you need to have some background and do a bit of guessing.