This model is based on the picture in the Osprey book, Japanese castles 250-1540 AD by Stephen Turnbull, of a high ranking Samurai fortified Yakata of around 1250AD.
This model has been painted by the designer Mick Nichol for use in Test of Honour games.
All of these, and fences, are available separately or as a complete set. The complete unpainted set includes the following-
Inner wall with gate,
7 tall fences 24cm,
3 tall half fences 12cm,
4 tall corners,
2 tall fences with low ‘T’,
1 low corner,
2 low fences 24cm,
These model kits can be found here-28mm Japanese kits