The image that the Cardinal was handing out was of the one commissioned for the shrine in St Louis as a focus for this ancient Church devotion. The St Louis Sacred Heart image is a mosaic and strikingly similar in form to the Maryvale Institute’s Sacred Heart images (which are based upon the visions of St Gertrude in the 13thcentury). The housing of the Shrine was designed by Duncan Stroik (with some input from New Liturgical Movement’s own Matthew Alderman, see here)
Photographs below are of the Shrine in St Louis, including the mosaic; and at the bottom of the two Maryvale Sacred Heart images, a panel painting and a window, which are in the same vein.
As a postscript: the Cardinal has agreed to work with the President William Fahey of Thomas More College in New Hampshire on the production a children's catechesis for the Sacred Heart I will do the illustrations for the book. It is the third in a series of catechetical books for children, the last one God's Covenant with You, was written by Scott Hahn.