Klingon D7 Battlecruiser

Here are some images of Polar lights 1/1000 scale Klingon D7 Battlecruiser from "Star Trek The Original series".

From Memory Beta"

The D7-class was the next step in Klingon battle cruiser design, its form being a development of the earlier D4 class. The first prototypes entered service as early as 2151 (ENT episode: "Unexpected")

By the mid 23rd century the class had become the mainstay of the fleet. Following the formation of a Klingon-Romulan alliance in the 2260s, many D7s entered service in the Romulan Star Empire as Stormbird-class cruisers. (TOS episode: "The Enterprise IncidentHere are some images of Polar Lights 1/1000 scale Klingon D& class Battlecruiser.
From Memory Beta"
The D7 class battle cruiser was a type of warship designed and built by the Klingon Empire during the mid 23rd century. Many also entered the service of the Romulan Star Empire following the formation of a Klingon-Romulan alliance in the 2260s. (TOS episodes: "Elaan of Troyius", "The Enterprise Incident", "Day of the Dove") .