Sorry Stavros, I got confused with the numbers Chatham had one or two which were 16+, I think 167 could be one. But it looks as though yours was a RNAD tug all its life. Though I was right she did carry a funnel band and a bulwark colour, but it does not subtract from the fact yours is a nice model, wish I could build to that standard. I would say that those fed up with Admiralty colours but want a TID other outfits had and used them, PLA had about 5 of them and all well maintained.
David