Angola 10 Kwanzas 1978

Hello,
I see there are two varietes of 1978 date:

small date and large date. dots near and dots far.

Can anybody post a picture of 1978 coin with dots near rim???

https://en.numista.com/catalogue/pieces4564.html

Also, I cannot understand, how may two different coins exist under same KM# ? I mean 1977 10 kwanzas, where is no date (!!!) and 1978 coin with date!

yours
D