Merman, Mermaid & Putti Flanking Wreathed Carpentry Tools, Library Of Congress Jefferson Building Second Floor South Corridor Ceiling (Washington, DC)

See also:

www.flickr.com/photos/takomabibelot/2098922805/

 

For a description of all of the trade & industry "trophy medallions" see:

books.google.com/books?id=EplT_cJ5u1AC&pg=PR12#PPA14,M1

Done