Hello,
All model-engineering parts are saleable – I suspect that the issue us more likely to be what price you might realise! Be-warned; prices for part-completed models are often relatively low – for a number of reasons.
The locomotive that you have parts for, possibly constructed according to the Hiraoka construction book, is of comparatively limited popularity in the UK, despite making an attractive and very interesting model. In addition the waters are muddied by there being two gear-train options, and, still more if you are prepared to do a little 're-designing'. Do you have the gears with your 'collection of parts'?
If you have an idea how much you would like to realise from the sale then you can always list it here in the 'personal ads'. Undoubtedly photographs will help! The other simple option is to place it on ebay and see what the market will pay. Obviously you have options where you can have a hidden reserve, or a public starting-price, etc., etc.
Perhaps others may give you additional ideas.
Regards,
Phil
Edited By Weary on 25/03/2017 13:18:54