Hi silverk,

The two small squares represent the extendable supports for the "wooden" flap in the open position

The Ax, later duty mark

Crowned O tax free duty mark of 1807
It is not a silver miniature toy but a loderein box or scent box. Shaped as a 18th century writing desk (Slant-Front Desk or secretaire) and made in Gouda 18th century- early 19th century. Loderein Secretaire-shaped boxes are rare!
Gouda town mark/ city coat of arms is based on the family coat of arms of the knights/lords of ‘Heren van der Goude’ vertical bar flanked by three stars.Crowned for 1st standard silver and uncrowned for 2nd standard silver.

The year letter
W for Gouda 1800. The Ax, a later duty mark (used 1853-1927), is attached to the year letter.
For Gouda see;
viewtopic.php?f=5&t=32028#p80360
The maker's mark indeed
VK in a square for: Nicolaas van Koomen, registered in Gouda 1793-1811.
Peter
Source;
Gouds zilver, werk van Goudse zilversmeden (tot 1813) Stedelijk Musea, Gouda 5 juli t.m. 31 augustus 1980. B.W.G. Wttewaall, Nederlands Klein Zilver 1650-1880, edition 1987, page 70, image 110