This is an injection-plastic ship model kit.
From the manufacturer:
The Mauretania was built at Wallsend-on-Tyne and launched in 1906. For 22 years the Mauretania was the fastest North Atlantic passenger liner averaging 25 knots for the crossing. The Mauretania had 9 decks with accommodation for 560 first class, 475 second class, and 1,300 third class passengers. During WWI she served both as an armed cruiser and as a hospital ship. She made her last Atlantic crossing in September 1934 and was broken up at Rosyth in 1935.
Completed kit measures 400mm long and 47mm wide.