silk serge
Webster's Dictionary (GCIDE)
Serge \Serge\, n. [F. serge, sarge, originally, a silken stuff, fr. L. serica, f. or neut. pl. of sericus silken. See Sericeous, Silk.] A woolen twilled stuff, much used as material for clothing for both sexes. [1913 Webster]
Silk serge, a twilled silk fabric used mostly by tailors for lining parts of gentlemen's coats. [1913 Webster]