7 x 57mm box with APT rounds.
All I can figure out is it was originally loaded by HP, as the headstamp indicate such, along with the original round paper string seal with the orange and blue circles with HP in white in the middle. The necks look to have been re-crimped at one time and the projectiles look to have been pulled. The original box top label I cannot decipher “Cartoucherie, Dordrecht.” as “Cartoucherie” was a French munitions and powder works before it was converted into a theatrical center in 1970. “Dordrecht” is a town in Holland I think?
Edit: Hirtenberger Patronen factory in Dordrecht, Netherlands. Ok, so then why the “Cartoucherie, Dordrecht.”?