"After the Old Master", no name needed!

At Chorley's, auction house in Gloucestershire, they sell on 19 May a nice painting with a strange description: "After the Old Master/Madonna and Child, St John and another child in a Landscape", a relatively large work (122 by 96) estimated at £2,000 to £3,000.

Apparently "the Old Master" is none other than "Van Dyck", and the work is simply known as "Charity", and can be found in the National Gallery. While the copy is competently painted, the colours are rather garish and all subtlety of the original is lost. May be worth its estimate, but not more probably. UPDATE: not sold