9mm Speer headstamps

Recently picked up several bullk bags of Speer 9mm Advertised as “seconds” brass and nickel plated brass. headstamp read speer at 12 oclock, 16 or 17 vertically at 3 O’clock, 9x19 at 6 o’clcok and three numbers (023 w 16 date Ni Cases 124 gdhp, 079 with 17 date brass case 124 tmj bullet, and 065 w 17 date, 124 hp) sorry dont have access to camera right now. Any ideas on what these were intended for?

posted similar headstamp info with 16 & 17 loaded ammo sold as seconds!