Ask about 2 rupees 121.3/4/5 (weight) from India

Hi every body, on comment it is indicated that the weight of the 2 rupees (India) km 121.4 (B type) is 5g,
https://en.numista.com/catalogue/pieces5474.html
but I never see it, and on an indian website, I don't read it : https://coinsofrepublicindia.blogspot.com/2012/07/definitive-coins-two-rupees-part-1.html
Is it true or not?
please if some one have this coin (5g) send me a Pm. thanks!
Good day
HsG

I don't have KM#121.4, but I do have .3 and .5. I checked the weight for those and they are all between 5,85g and 6,18g.

Any progress on this one? I have several doubles, one from 1994 weighs 5.48g but they are mostly closer to 6 or over 6, up to 6.12g. Seems quite a big variation so presumably “5g” pieces are just very underweight ones?

Here are the ones I have measure: