Trying to identify a 6 cyl diesel. Green wheels.  Tag says 99 (no mention of Super or S99). In the right light you can see paint on the fuel tank that says su....as in Super. Serial # is 519514. That would make it the second from the last in 1954.

 Would the tag say Super or &quot;S&quot; for a Super 99 or would it just read 99?
 Did any 99's come with green wheels?
 Any other ways to distinguish a 99 from a Super 99?
Any help would be welcome. Thanks

                                                        Jim Thurnau
                                                         Galesburg, IL