Brass ID

[Dymoke]

At the range the other day and someone left a baggie of spent brass
"FNM 93-1 L21A1" would anyone need them for reloading ?
By the way what cal are they??

 

[Mk VII]

They will be 7.62 NATO and they were purchased from Portugal by Britain. Bullet weight is about 145gn. They will be Berdan-primed, but this brand is the easiest to decap of all Berdan types and I seek them out if I am reloading Berdan stuff.