http://www.thepropgallery.com/skagra-christopher-neame-spaceship-filming-miniature-shada

Quote

An original prop used in the production of the long running BBC science fiction television series Doctor Who.

This spaceship filming miniature was created for the uncompleted and unaired serial Shada starring Tom Baker as The Doctor which was intended to be broadcast in 1980, it was later released on VHS in 1992 with narration by Tom Baker and the addition of new effects shots produced by Ace Editing.

The miniatures for Skagra's spaceship were visioned by BBC Visual Effects Department designer Dave Havard and built in three scales with this being the medium sized version believed to have been constructed by effects assistant Stuart Brisdon in scale with the Krarg carrier miniature. The miniature is constructed from wood and plastic and features a perspex cockpit canopy and a weathered yellow paint finish, the sequences that appear on the VHS and DVD release and feature this very model were not actually created during the visual effects filming which took place at Ealing Studios in November 1979 but were instead rendered from still photographs taken at the time. The final previously unpublished photograph presented here shows this ships large scale counterpart behind the scenes at Ealing Studios during the visual effects shoot.

The miniature measures approximately 9.5" long and remains in excellent condition with some minor paint wear and lacking one piece of detail from the left rear, otherwise very fine.

This represents an incredibly rare example of an original filming miniature and a highly displayable artefact from this classic science fiction series.

Those are some great pics. The cockpit must be bigger than it looks as the total length according to K-9 was 100 metres.

It's fine for the amount of screen time it would've had, but they didn't exactly break the bank making this one, did they? 

Very cool.

I did think it was meant to be invisible. I seem to remember this from Tom's narration.... or was that just meant to be a cloaking device?  

It was invisible at first then decloaked after taking off.

I've only just noticed the asking price! For a model that appeared briefly in the VHS release of an incomplete, untelevised story... no wonder JNT personally kept so many props, a dozen or so could set up a persons retirement.