Old AEG Hotpoint Electric Oven
Hi Tim, At a total of 2600 Watts your oven left on will easily Self-Clean itself and go over 1000 F as well, I would not recommend it though on something that old as it could buckle some metal parts or ruin some wiring etc.
I used to hear stories of purple burning off soil in old electric ovenlike yours, even the owners Manuel suggested burning the top elements clean [ the open coil ceramic type ] by placing a metal pie pan oven them and turning them on high for 15 minutes.
Thermostats are wonderful things to have on a range, NO MANUFACTURER would ever build an oven with a heat control system and thankfully we are starting to get maximum heat limits on surface elements as well, they are even working on gas surface burners as well to make them safer.
John L.