There are rumors in Greek medias that the US is going to acquire 50k 105mm artillery shells, 20k 155mm shells and 5k 203mm shells from the Greek Army’s stockpiles (totaling $47 million) in order to ship them to Ukraine. This is a welcome news - particularly for 105mm shells, the shortage of which is atrocious, in spite of Ukraine having around 170 howitzers of such caliber.

I think so, but they are likely late Cold War era shells.