Things get mixed up sometimes unintentionally. Maybe another cockerel passed his semen or the person who collected the eggs made a mistake. Or a genetic error occurred.
It reminds me of a surprise tulip I have. I have a pink parrot type tulip between the yellow ones I ordered.
I dont think a RIR should have a floppy comb. I have a bantam RIR from a true breeder. She looks more like your Clementine. The other RIR looks more like a red laying hybrid mixed with leghorn.
Dutch site with a good picture:
http://www.kippenencyclopedie.nl/php/index.php?title=Rhode_Island_Red