Late 1970s bookshelf with fairly low efficiency - for a JBL.
Low driver
25cm with 7,6cm edge-wound copper bobbin, AlNiCo V magnet, linear frequency response up to 3Khz, low-tolerance diecast chassis.
Mid driver
13cm with 2,2cm edge-wound copper bobbin, 2,2cm rigid aluminium dome, low-tolerance diecast chassis set in its own isolated chamber.
High driver
2,5cm hemispherical dome made of two layers of impregnated cloth glued together with phenolic resin and set at crossed 45° angles for improved rigidity with 2,5cm edge-wound copper bobbin and frequency response extending to 30Khz.
More about the L110 lineage and downloadable service manual (which covers the two versions - L110 and L110A) here.