Byzantine Empire

Hi,
I have this Byzantine Empire, common coin similar to 1 Follis, copper but weight is 8gr instead of 16.5 g and diameter is 30mm instead of 34 mm.
Similar to this: https://en.numista.com/catalogue/pieces47703.html coin and the actual coin below, what do you think the big difference is in weight/diameter? Could it be a half follis? Should I add it?
Thanks in advance.

Same coin.
The weight and diameter showing on this page seems particularly high for this type : normally they should weight about 10g (at most !).

There is already a double entry for this coin : https://en.numista.com/catalogue/pieces101592.html

Thank you Cycnos

Hi Cycnos,

The coin of the link you sent me is now gone. What do you recommend? Should I ask to modify the weights? on this https://en.numista.com/catalogue/pieces47703.html one?

Yep,
Just add in the comment section the link to this topic, the following link and say the heaviest one recorded there weight 10,12g : https://www.cgb.fr/boutique_recherche,IL2449806F2727E0.html

The average weight seems to be 8 or 9g