BOAC:
Aterp - if that is a genuine Jepp product you have screenshot then there is a serious error which needs addressing with great urgency. The MDA is dangerously wrong!
The two VOR IAPs don't have an altitude coded at that point. Why the 490 on the NDB is beyond me. It does seem to be a coding error. Nonetheless, a properly trained crew is to predicate MDA on the chart, not anything in the database.
Still no logical explanation from anyone for two different circlings at VOBZ. Is it just a co-incidence that the CAT C circling alt for 26 is the same as the VOR minima CAT A/B for 08? Bizarre!
That is a question only the Indian procedures design staff could answer.