In the Linguistic Survey of India (vol. III, pt. I), George A. Grierson makes brief mention of a script used for writing Balti, a Tibeto-Burman language spoken in northern Pakistan. Grierson writes that the script was devised around the year 1400, at the time when Islam arrived in Baltistan. Reported, historical books were written in this script, which were in the possession of royal families. The Linguistic Survey contains a small specimen of Balti text written in the script with interlinear Arabic transliteration, an excerpt of which is given below:
The following is the English translation and Roman transliteration:
Short of planning a trip to northern Pakistan, I thought I'd ask if anyone has more information on this script. If so, please do contact me.