"A Deleeuw" is Alexis de Leeuw

Horta, from Belgium, sells on 17 January 2017 a "A. Deleeuw, Belgian School" pair of winter landscapes, estimated at 1,000 to 1,500 Euros.

The auction house probably was fooled by the space in the name: the artist is Alexis De Leeuw (1848-1883), a Belgian artist best known for this kind of commercial but better-than-average work.

A comparable pair (slightly bigger and in better condition, and perhaps somewhat better painted as well) was sold at Christie's London in 2008 for £5,250, so the current estimate seems to be too low, probably becaues they couldn't identify the artist.

I would guess that they will go for 2,000 Euro instead.