If you click the link and scroll down to the Luger section you will find this. These are not classified as SBR's. As far a California law I don't know!
SECTION II: Firearms Classified As Curios Or Relics Under 18 U.S.C. Chapter 44
The Bureau has determined that the following firearms are curios or relics as defined in 27 CFR 178.11 because they fall within one of the categories specified in the regulations.
Such determination merely classifies the firearms as curios or relics and thereby authorizes licensed collectors to acquire, hold, or dispose of them as curios or relics subject to the provisions of 18 U.S.C. Chapter 44 and the regulations in 27 CFR Part 178. They are still "firearms" as defined in 18 U.S.C. Chapter 44.
Luger, Model 1902 Cartridge Counter, Mauser commercial, semiautomatic pistol, cal. 9mm, mfd. 1982.
Luger, pistol, all models and variations mfd. prior to 1946.
Luger, Mauser commercial manufacture, semiautomatic pistol, 70 Jahre, Parabellum-Pistole, Kelsoreich Russiand, commemorative, cal. 9mm.
Luger, Mauser commercial manufacture, semiautomatic pistol, 76 Jahre, Parabellum-Pistole, 1900-1975, commemorative, cal. 7.65mm.
Luger, Mauser commercial manufacture, semiautomatic pistol, 75 Jahre, Parabellum-Pistole, Konigreich Bulgarian, commemorative, caliber 7.65mm.
Luger, Mauser Parabellum, semiautomatic pistol, 7.65mm or 9mm Luger, 4 and 6" barrel, Swiss pattern with grip safety and the American Eagle stamped on the receiver; made from 1970 to 1978.
Cureo & Relic list