Located at 230 Park Avenue, the Helmsley Building was designed by Warren & Wetmore in 1929. The clock architectural sculpture was sculpted by Edward McCartan and entitled "Transportation and Industry". At one point, Helmsley himself had the sculptural group cupuloa gilded, but this was later removed.
The use of Mercury is no surprise considering his use on Grand Central Terminal's facade. Again, Mercury's associaiton with transportation is evoked in his iconography. Ceres is shown on the right, again with attending agricultural products.
Of note is the incorporation of acorns into the iconography of the entire clock group. Acorns especially evoke the Vanderbilts.