Help ID'ing this Gwalior type/year?

So with the help of Numista and Coinoscope I think I've narrowed this down to 1929 and two types:
N#10067
N#22285

But it's not clear to me from those pages wha's different between the two.   
How do I distinguish this one?

Thanks in advance for any help!

chaboard

But it's not clear to me from those pages wha's different between the two.   
How do I distinguish this one?

Weight?