That is almost exactly like mine -
'L' badge only on mine too.
The very early Kadett Rallyes had leaf springs at the rear end and the grooves stamped behind the rear side windows make it a "Kiemmen" Coupe'
(Means "Gills" - I have been told ... sp?). Most all the 'Rallye' bits are missing from that poor wee refugee from the crusher - save it someone!
Just recieved a NOS Rallye grill for mine last week ... all the way from Hilton, New York! $US77.79 plus $US35.40 AirMail Postage - outbid a last minute sniper by 18 cents!