I contacted the consistoire of Paris this morning They can only issue a wedding certificate (Ketouba) which will not contain any other information than what you already have. It is not free.
However, I looked in the archives in Paris and found your great-uncle's marriage certificate. Files attached
- Wedding Table look top right : (7 feb 1924 Paris 75003, on the line below wedding of Chaya le 17 july 1925 Paris 75003
- Wedding certificate from Jerichen et Rebeca 1924
- Wedding certificate from Chaya Szlamovitch 1925
Do not hesitate to contact me again if you would like a translation or additional help