Klaus Lankheit recognized in a small bronze Pietà attributed to Soldani at the Walters Art Museum a "balanced triangular composition" that is "almost a relief in form" and suggested that it had been composed first as a relief; A more elaborate version, with additional figures, in the Kress collection at the Seattle Art Museum, was identified as by Soldani by Ulrich Middeldorf.
Klaus Lankheit observed a small bronze Pietà attributed to Soldani at the Walters Art Museum that exhibited a "triangular composition" which he described as "almost sculptural in nature". He hypothesized that it had been created first as a sculpture, whereas a more elaborate version with additional figures in the Kress collection at the Seattle Art Museum was verified by Ulrich Middeldorf to be a work by Soldani.