Actually, Sandy, that's a main-lug panel. The 50-amp 2-pole breaker was for the range, the 20-amp 2-pole for a water heater or window A/C, and the remaining 1-poles were the branch circuits.
I've worked on this same panel as recently as last year. Those Stab-loks are interchangeable with the more-recent red-and-black F.P. panels and breakers.
