jolly green giant

I have a 71 Charger, I have gone through the fender tag but was curious if anyone would know what the additional small tag would mean. It is maybe a half inch wide comes off of the left screw and and has a 2 and a 4 stamped into it and what looks like a R punched into it ? According to the tag the car should have a black vinyl top and now has a gold or tan top . Was wondering if maybe something was changed on the assembly line ? Any input would help..... Thanks

fms777