Huge Delftware charger made by Chemkefa in 1970s. The plate is titled "De Zomer" what means summertime.
Chemkefa is the abbreviated name of Chemisch Keramisch Fabriek. The factory was established by the former Sphinx employee Leendert Zwikker after the Sphinx was closed in 1969.
Chemkefa is located in Maastricht. It specializes in transferware blue & white decorative Delftware chargers with traditional Dutch scenes. Chemkefa uses a very dark blue paint.
The plate is stamped: