British scholars found the language Sanskritic and said that the Devnagri script would be right for it. In 1849 they produced an English-Sindhi dictionary in Devnagri. A year later they translated the Bible in Sindhi, again in the Devnagri script. Government servants, many of whom were Hindus, favoured the Arabic script, since they did not know Devnagri, and had to learn it anew.

A big debate started, with Capt. Burton favouring the Arabic script and Capt. Stack favouring Devnagri. Sir Bartle Frere, the Commissioner of Sindh, referred the matter to the Court of Directors of the British East India Company, which favoured Arabic on the ground that Muslim names could not be written in Devnagri.

Sir Richard Burton, an orientalist, with the help of local scholars Munshi Thanwardas and Mirza Sadiq Ali Beg evolved a 52-letter Sindhi alphabet. Since the Arabic script could not express many Sindhi sounds, a scheme of dots was worked out for the purpose. As a result, the Sindhi script today not only has all its own sounds, but also all the four Z's of Arabic.

http://www.sindhilanguage.com/script.html


Постольку-поскольку Munshi Thanwardas and Mirza Sadiq Ali Beg эволюционировали 52-буквы существовавшего арабского алфавита Синдхи, после 1850 года, не позволявшего выражать множество звуков речи Синдхи, введением специально разработанной для этой цели системы точек.

Т.о. монеты Дмитрия Донского содержащие букву ﭸ введенную в арабицу Синдхи только после 1850 года, отсутствующую в арабице других языков, печатались только после выхода в свет в 1866 году первого "Кредитного билета".

Кредитный билет
http://www.chronologia.org/dcforum/DCForumID14/11039.html#133

Но, все равно интересно что написано на ней.