FF Signa Slab Pro family (FontFont library) contains 14 fonts.
FF Signa Slab Pro Extra Light
FF Signa Slab Pro Extra Light Italic
FF Signa Slab Pro Light
FF Signa Slab Pro Light Italic
FF Signa Slab Pro Book
FF Signa Slab Pro Book Italic
FF Signa Slab Pro Demi Bold
FF Signa Slab Pro Demi Bold Italic
FF Signa Slab Pro Bold
FF Signa Slab Pro Bold Italic
FF Signa Slab Pro Black
FF Signa Slab Pro Black Italic
FF Signa Slab Pro Extra Black
FF Signa Slab Pro Extra Black Italic
Font collection on Fonts-online.com Alphabet font list
