could be a swinger special, vin number will start with (LL23G2) which is a cool car because swinger specials were low production numbers and make a good sleeper because the nature of a swinger special was to be a plain low buck car.
A regular swinger in 72 will have a vin starting with LH23G2.
Either way ….a good clean 72 dart is worth 2500. all day long