Coin page relating to New Zealand 1994 5 dollars KM#91 - wrong weight? [Risolto]

The page gives coin weight as 28.28g. I believe the weight should be 31.47g:

I have recently bought this coin and it weighs 31.43g on my scales. My coin appears to be a 925 silver coin: it is the right diameter and thickness (I am measuring with a ruler and therefore differences of less than 1mm are difficult for me to measure accurately), the coin is proof with a perfect mirror-like background and frosted foreground, and a neodymium magnet slides slowly down the coin held at 45 degrees. I have done some further investigation: there are plenty of this coin for sale on eBay (a bit of a red flag to me given the mintage of just 34,600) and many of them come with a small Royal Mint branded card-type 'CoA' stating the weight at 28.28g. I then contacted 10 sellers of this coin asking them to verify the weight as weighed by them. My results: Of the 10 sellers I contacted, five had stated a weight of 28.28g ('Royal Mint' CoA = assumed not weighed) in their listing, one gave a weight of 31.47 ('MDM' CoA = assumed not weighed), one gave a weight of 31.2g (as weighed by seller), and three did not give a weight. Seven sellers responded to my email. Four weighed the coin themselves (31.2g, 31g, 31.3g and 31.47g). Three either said that they had not weighed it or their response suggested to me that they had not weighed it. Three did not respond. Significantly, no seller confirmed the coin at 28.28g by weighing it themselves.

What I would like is for someone who knows that they have the real coin to weigh it and see what it weighs - with a view to updating the weight on the page if necessary.

Thank you in advance to anyone who can shed light on this.
Best Regards,
Mike

link to coin in the numista catalogue?

Cita: "peterjhalford"​link to coin in the numista catalogue?

​https://en.numista.com/catalogue/pieces84761.html

I suspect the correct weight is 34.47g based on the other 5 dollar .925 silver coin New Zealand put out in 1994.
https://en.numista.com/catalogue/pieces77602.html

Thank you, Peter, for adding the links to relevant catalogue pages. I, too, think the correct weight should be the same as the other 1994 coin, 31.47g. I hesitate to suggest the change, though, without some confirmation from, as I said, someone who has the coin and knows it's real. This is because there are plenty of other coin-related websites that also list this coin as 28.28g, and there are also many (thousands, perhaps) of these little official-looking cards (below) out there 'confirming' the weight at 28.28g. (I'm a bit of a newbie to this, but it seems to me these 'authenticity' cards are unlikely to have been produced by the Royal Mint at all and, in this case, the creator of these things has simply copied a mistake from somewhere else.) Sorry these pictures are so small; I don't know how to make them any bigger on this page before sending.
Mike

Whoops!
Thank you rsirian1! (for adding links)

Cita: "rsirian1"​​I suspect the correct weight is 34.47g based on the other 5 dollar .925 silver coin New Zealand put out in 1994.

​I think you've made a typo, of course you meant 31.47 g.?

Cita: "cosaslindas"​ Sorry these pictures are so small; I don't know how to make them any bigger on this page before sending.

​Don't you worry about the pictures. We only have to click on them to see them large enough. Those who are interested click on them, those who aren't interested don't. Everybody happy.

Concerning the weight, after those 4 sellers weigh the coin themselves it's safe to say the coin weighs (theoretically) 31.47 g. (in reality probably a little bit less, like the figures of those who have weighed it show). I don't have that coin but I have that other 1994 coin and I've just weighed it: 31.51 g.
28.28 g. is a very common weight for crown sized coins (all the Pobjoy crown sized coins weigh (theoretically) 28.28 g. I guess someone made a mistake while making the CoA and a lot of websites/sellers took over that mistake without weighing the coins themselves.

Cita: "Essor Prof"​

Cita: "rsirian1"​​I suspect the correct weight is 34.47g based on the other 5 dollar .925 silver coin New Zealand put out in 1994.
​
​

​​I think you've made a typo, of course you meant 31.47 g.?

​Yes, of course. My mind said one thing, my fingers said another.

Thank you to all for the feedback on this query. I think I'll leave it a week or so in case of other contributions and then go through the Add or Modify Data process to suggest the change to 31.47g.
Mike

Also when you make the edit make reference to the COA in the comments and add an image of the COA so when others come across the page they know about the conflict as well..