I found the 22 story 1921 Cunard building 25 Broadway in NYC has a number of interesting nautical related keystones and carvings as well as ceilings since it was occupied by the Cunard ship owners. It’s interior is stunningly and it’s a designated landmark. The keystones and decorations include a figure blowing wind, snails and shells, but one thing that caught my eye was this roundel of a sailing ship, and it’s difficult to tell but the lower floors where this is located are carved stone, hard to imagine the detail on this being carved in stone which is why I think it may be terracotta with a matt granite…