Agree, it comes closeds to Tye#283. However, i do not think this is a regular minted variant of this type. As you say it looks crude.
Firstly, the style of the lettering is a bit different. Secontly, and i think more importantly, Tye#283 has a beaded border connected by a line. On yours is a irregular beaded border without line. One might argue that this than is just a later variant from the same mint. However, if i try to find the closest relative of Tye#283 i'd pick Tye#314, issued under Ala-ud-din's son Jalal-al-din Mangubarni. That's the first coin below. Both the text and the layout of this are similar to Tye#283. It also has the beaded border. Interestingly, Tye#283 is attributed to Ghazna while Tye#314 is attributed to Kurraman mint. The attribution of Tye#314 to Kurraman seems quite likely. This because Tye#314 seems closely coupled to Tye#330, issued during the rule of Chingis Khan. Tye#330 also has the beaded line border and the mintname "Kurraman" is written on the coin.
Though probably not specific, i'd say that the beaded line border is a quite distinct marker for Kurraman mint. So much that i'd suggest Kurraman as an alternative mint for Tye#283 instead of Ghazna. Another example of the link between Kurraman and the beaded border is for example Tye#291, the second coin shown below.
