Ross Luxus were a larger format postcard than the regular Ross cards.   They seemed to have been released with only one card per each series.   I have not yet seen any numbered below #500 or above #803.   One contributor does have a 6020/1 large format card with the RossLuxus logo on back, so perhaps they occasionally did larger versions of their regular card numbers.

Some of these cards were also published as a series known as "Ross Splendid."   The photos and numbers were the same, but the pictures were of a sepia or brown tone as opposed to the black and white (or grey tone) of the LuxusClasse cards (thanks to Ellen Roubus for solving this mystery).

500/   Greta Garbo
501/   Marlene Dietrich 502/   Willy Fritsch 503/   Lilian Harvey 504/   Billie Dove
505/   Ramon Novarro 506/   Laura La Plante 507/   Charles Rogers 508/   Norma Shearer
509/   Clara Bow 510/   Nancy Carroll 511/   Jwan Petrovich 512/   Anita Page
513/   Anny Ondra 514/   Brigitte Helm 515/   Greta Garbo 516/   Adolphe Menjou
517/   Olga Tschechowa 518/   Dolores Del Rio 519/   Willi Forst 520/   Vilma Banky
521/   Lien Deyers 522/   Maurice Chevalier 523/   Lily Damita 524/   Greta Garbo
525/   Greta Garbo 526/   Willy Fritsch 527/   Lilian Harvey/Willy Fritsch 528/   Lilian Harvey
529/   Lilian Harvey 530/   Brigitte Helm 531/   Maurice Chevalier 532/   Lil Dagover
533/   Clara Bow 534/   Bebe Daniels 535/   Nancy Carroll 536/   Anita Page
537/   Jeanette Mac Donald 538/   Maurice Chevalier 539/   Camilla Horn 540/   Charles Rogers
541/   Olga Tschechowa 542/   Werner Fuetterer 543/   Mary Brian 544/   Willy Fritsch
545/   Marlene Dietrich 546/   Maria Paudler 547/   Liane Haid 548/   Richard Tauber
549/   Gretl Theimer 550/   Gustav Fröhlich 551/   Lien Deyers 552/   Greta Garbo
553/   Greta Garbo 554/   Greta Garbo 555/   Käthe von Nagy 556/   Anny Ondra
557/   Jeanette Mac Donald 558/   Camilla Horn 559/   Ramon Novarro 560/   Janet Gaynor
561/   Maurice Chevalier 562/   Marlene Dietrich 563/   Charles Rogers 564/   Brigitte Helm
565/   Hans Stüwe 566/   Lilian Harvey 567/   Lilian Harvey 568/   Willy Fritsch
569/   Willy Fritsch 570/   Jeanette Mac Donald 571/   Norma Shearer 572/   Lilian Harvey
573/   Lilian Harvey 574/   Willy Fritsch 575/   Willy Fritsch 576/   Brigitte Helm
577/   Maurice Chevalier 578/   Jeanette Mac Donald 579/   Greta Garbo 580/   Greta Garbo
581/   Ramon Novarro 582/   Marlene Dietrich 583/   Nancy Carroll 584/
585/   Käthe von Nagy 586/   Anita Page 587/   Clara Bow 588/   Camilla Horn
589/   Dorothy Jordan 590/   James Hall 591/   Gloria Swanson 592/   Gary Cooper
593/   Renate Müller 594/   Henny Porten 595/   Mary Pickford 596/   Greta Garbo
597/   Greta Garbo 598/   Willy Fritsch 599/   Willy Fritsch 600/   Lilian Harvey
601/   Lilian Harvey 602/   Charles Farrell 603/   Janet Gaynor 604/   Johannes Riemann
605/   Renate Müller 606/   Heinz Rühmann 607/   Lil Dagover 608/   Lien Deyers
609/   Mady Christians 610/   Maurice Chevalier 611/   Maria Paudler 612/   Gerda Maurus
613/   Conrad Veidt 614/   Jenny Jugo 615/   Martha Eggerth 616/   Nancy Carroll
617/   Fritz Schulz 618/   Marlene Dietrich 619/   Igo Sym 620/   Clara Bow
621/   Norma Shearer 622/   Charles Rogers 623/   Jeanette Mac Donald 624/   Anita Page
625/   Gary Cooper 626/ 627/   Lilian Harvey 628/   Lilian Harvey
629/   Willy Fritsch 630/   Willy Fritsch 631/   Lil Dagover 632/   Maurice Chevalier
633/   Anny Ondra 634/   Liane Haid 635/   Hans Albers 636/   Lucie Englisch
637/   Marlene Dietrich 638/   Käthe von Nagy 639/   Käthe von Nagy 640/   Anna Sten
641/   Willi Forst 642/   Marlene Dietrich 643/ 644/   Lupe Velez
645/   Hans Stüwe 646/   Anna May Wong 647/   Ramon Novarro 648/   Greta Garbo
649/   Greta Garbo 650/   Norma Shearer 651/   Clive Brook 652/   Lily Damita
653/   Jeanette Mac Donald 654/   Maurice Chevalier 655/   Billie Dove 656/   Dolores Del Rio
657/   Greta Garbo 658/   Greta Garbo 659/   Greta Garbo 660/   Willy Fritsch
661/   Willy Fritsch 662/   Lilian Harvey 663/   Lilian Harvey   664/   Hans Albers
665/   Hans Albers 666/   Käthe von Nagy 667/   Oskar Karlweis 668/   Liane Haid
669/   Felix Bressart 670/   Marlene Dietrich 671/   Marlene Dietrich 672/   Maurice Chevalier
673/   Camilla Horn 674/   Ramon Novarro 675/   Brigitte Helm 676/   Brigitte Helm
677/   Jeanette Mac Donald/Maurice Chevalier 678/   Lee Parry 679/   Gustav Fröhlich 680/   Jeanette Mac Donald
681/   Maurice Chevalier/Jeanette Mac Donald 682/   Magda Schneider 683/   Hans Albers 684/   Hertha Thiele
685/   Luis Trenker 686/   Gustav Fröhlich 687/   Liane Haid 688/   Greta Garbo
689/   Dorothea Wieck 690/   Nils Asther 691/   Maurice Chevalier 692/   Käthe von Nagy
693/   Willy Fritsch 694/   Lilian Harvey/Willy Fritsch 695/   Lilian Harvey 696/   Lilian Harvey
697/   Marlene Dietrich 698/   Sylvia Sidney 699/   Igo Sym 700/   Lien Deyers
701/   Greta Garbo/Ramon Novarro 702/   Rosy Barsony 703/   Brigitte Helm 704/   Siegfried Arno
705/   "Der Kongress lanzt" 706/   "Der Kongreß tanzt" 707/   "Ronny"   Käthe von Nagy 708/   "Ronny"   Willy Fritsch
709/   "Zwei Herzen und ein Schlag"   Lilian Harvey/Wolf Albach-Retty 710/   "Bomben auf Monte Carlo"   Hans Albers/Anna Sten 711/   "Bomben auf Monte Carlo"   Hans Albers/Heinz Rühmann 712/   "Der Frechdachs"   Else Elster/Ralph Arthur Roberts
713/   "Der Sieger"   Hans Albers/Käthe von Nagy 714/   "Der Sieger"   Hans Albers 715/   "Quick"   Lilian Harvey/Hans Albers 716/   "Ein Blonder Traum"   Willi Forst/Lilian Harvey/Willy Fritsch
717/   Hans Albers 718/   Hans Albers 719/   Gitta Alpar 720/   Iwan Petrovich
721/   Brigitte Helm 722/   Lil Dagover 723/   Lucie Englisch 724/   Olga Tschechowa
725/   Harry Liedtke 726/   Magda Schneider 727/   Gerda Maurus 728/   Marta Eggerth
729/   Conrad Veidt 730/   Mady Christians 731/   Wolf Albach-Retty 732/   Billie Dove
733/   Charles Farrell 734/   Janet Gaynor 735/   Dorothy Jordan 736/   Willy Fritsch
737/   Lilian Harvey 738/   Greta Garbo 739/   Marlene Dietrich 740/   Maurice Chevalier
741/   Jeanette Mac Donald 742/   Sylvia Sidney 743/   Nancy Carroll 744/   Anny Ondra
745/   Renate Müller 746/   Willy Fritsch/Käthe von Nagy 747/   "Das Lied einer Nacht"   Jan Kiepura 748/   "Opernredoute"   Jwan Petrovich/Liane Haid
749/   "Gassenhauer"   Hans Deppe/Martin Jacob/Albert Hoermann/
Wolfgang Staudte/Ina Albrecht
750/   "Ein blonder Traum"   Paul Hörbiger 751/   "Gitta entdeckt ihr Herz"   Gitta Alpar/Gustav Fröhlich 752/   "Die -- oder Keine"   Gitta Alpar
753/   "Die -- oder Keine"   Gitta Alpar 754/   "Der schwarze Husar"   Mady Christian 755/   "Traum von Schönbrunn"   Marta Eggerth 756/   "Sehnsucht 202"   Luise Rainer/Fritz Schulz
757/   "Annemarie, die Bruat der Kompagnie"   Paul Hörbiger/Lucie Englisch 758/   "Friederike"   Hans Heinz Bollmann/Mady Christians 759/   Marlene Dietrich 760/   Brigitte Helm
761/   Fritz Schulz 762/   Hans Albers 763/   Sylvia Sidney 764/   Hans Stüwe
765/   Gustav Diessl 766/   Dolly Haas 767/   Liane Haid 768/   Lee Parry
769/ 770/   Joan Crawford 771/   Gretl Theimer 772/   Werner Fuetterer
773/   Käthe von Nagy 774/   Dorothea Wieck 775/   Clark Gable 776/   Marta Eggerth
777/   Hermann Thimig 778/ 779/   Magda Schneider 780/   Greta Garbo
781/   Willy Fritsch 782/   Lilian Harvey 783/   "Grün ist die Heide"   Fritz Kampers/Paul Beckers/Karl Blume 784/   "Ich bei Tag und Du bei Nacht"   Käthe von Nagy/Willy Fritsch
785/   "Liebe auf den ersten Ton"   Lizzi Waldmüller/Karl Jöken 786/   "Der große Bluff"   Lee Parry/Harald Paulsen 787/ 788/   "F.P. 1 antwortet nich"   Paul Hartmann/Sybille Schmitz/Hans Albers
789/   "...und es leuchtet die Puszta"   Rosy Barsony/Tibor von Halmay 790/   "Kaiserwalzer“   Marta Eggerth 791/   "Marion das gehört sich nicht!“   Magda Schneider 792/   "Wie sag’ ich’s meinem Mann?“   Renate Müller/Georg Alexander/Jda Wüst
793/ 794/   "Brennendes Geheimnis"   Willi Forst/Hans Joachim Schaufuß; 795/ 796/   "Ich und die Kaiserin"   Lilian Harvey
797/   "Die Tochter des Regiments"   Anny Ondra/Otto Wallburg 798/   "Ein Lied für Dich"   Jan Kiepura 799/   "Heut' kommt's drauf an!"   Hans Albers/Louise Rainer 800/   "Muß man sich gleich scheiden lassen?"   Iwan Petrovich/Else Elster
801/   "Salon Dora Green"   Mady Christians/Paul Hartmann 802/   "Ein Lied geht um die Welt"   Joseph Schmidt/Charlotte Ander 803/   Lilian Harvey

TheLists #1-1000 #1001-2000 #2001-3000 #3001-4000 #4001-5000 #5001-6000
#6001-7000 #7001-8000 #8001-9000 #9001-9999 #A 1001-A 2000 #A 2001-A 3000 #A 3001-A 4000