"five pairs of bronzed baby shoes"

In the United States, the bronzing of baby shoes as sentimental tokens was popular from around the 1940s to the 1970s. Baby shoes are 'bronzed' through encasing the shoes in a layer of a conductive material such as copper, bronze, silver, gold or pewter and then electroplating, which involves metal ions in a solution being moved by an electric field to coat an electrode.