Rare Antique Dutch Blue & White Royal Delft Hand Painted Bowl / Ashtray - 1917

The tin glazed earthenware bowl / ashtray decorated in shades of blue 
with two sceneries with the “ Trekschuit " and the text:
DE MOTOR-BOOT UIT DIENST GESTELD
DE TREKSCHUIT WEER IN EER HERSTELD * 1917
(The motorboat is out of business, the pulling barge returned in honour.)
Design by Leon Senf.
Signed on the bottom in underglaze blue for:
DE PORCELEYNE FLES  -  ROYAL DELFT
DELFT - HOLLAND              ANNO 1917
Painter’s initials: VB = Willem Alexander Karel Hendrik Frederik van Baarsel.
Employment dates: June 30th, 1893 - 1948.
Literature:
This item is shown in Rick Erickson - Royal Delft   Page 138 - Fig. 11 -49 Only some 800 ashtrays were produced.

Height: 4,5 cm.  (1,8 inches.)
Diam.: 12,5 cm. (4,9 inches.)          
Weight: 233 grams.