This is a very small (Federationmodels.com website says 1:3500 but I think it's 1:1000) Romulan scout ship from the TNG episode "The Defector"
P1010307 by stephen.north66, on Flickr
P1010308 by stephen.north66, on Flickr
P1010301 by stephen.north66, on Flickr
P1010302 by stephen.north66, on Flickr
P1010303 by stephen.north66, on Flickr