Yet another grouping of cards without any identifying markings.  I have two clues to operate on from this group: 1. They were purchased from a seller located in Belgium; 2. They are very similar to the De Film Films Stars cards found on The Movie Card Website.  In fact his Alice White card matches mine, but there are differences -- my cards, shown below, have blank backs.  Also these measure 1-7/8" X 2-1/2", actually even a slight tick below 2-1/2".  So, you've got me, all I can say with any sort of certainty is that they are likely from the pre-code period and they are almost certainly from Belgium.  All of the cards I purchased are shown below, then beneath them I've listed the names of other cards that the seller had (those I passed on).  Oddly, all of the cards listed are actresses, except for one male star (Lars Hanson).  At least this gives us some semblance of a checklist.

Renee Adoree	Vilma Banky	Dolores Del Rio	Lya De Putti	Janet Gaynor
Lillian Gish	Corinne Griffith	Phyllis Haver	Pola Negri	Anna Q. Nilsson
Mary Pickford	Alma Rubens	Lupe Velez	Eleanor Boardman Olive Borden Betty Bronson Betty Compson Maria Corda Lil Dagover Lucy Dorraine Jetta Goudal Georgia Hale Lars Hanson Doris Kenyon	Natalie Kingston Arlette Marchal Greta Nissen Anny Ondra Henny Porten Esther Ralston Pauline Starke Alice Terry Olga Tschechowa Virginia Valli Lois Wilson