Hi I have no modelling experience I think the piece was commissioned for a museum or returned servicemans club. I bought it secondhand.
I have cleaned away the fluffy dust with a dry paintbrush. What is left is slightly greasy dust/grime obscuring the colour and making the whole thing look dirty. The paint underneath is a pretty matt finish. It doesn't seem sealed I suspect rubbing too much will take the paint off the balsa.
There is a heck of a lot of detail on this really large boat. A lot to clean but at this stage I just don't know what liquid to use to shift the grime.
Thank you so much for your help
https://imgur.com/WXP8pwXhttps://imgur.com/O5ejfw4 https://imgur.com/Kos7mPg https://imgur.com/njI9JZO https://imgur.com/EvLT3QP