Molded surface of a concrete product

The design is the shape of a CONCRETE BLOCK as shown in the accompanying photographs. The most significant feature of the design is the shape of the front surface showing depressions and ridges. Photographs are included in which:Figure 1 is a front elevational view of a concrete block, according to a first variant of the design;Figure 2 is a right side elevational view of the concrete block of Figure 1;Figure 3 is a left side elevational view of the concrete block of Figure 1;Figure 4 is a top plan view of the concrete block of Figure 1;Figure 5 is a bottom plan view of the concrete block of Figure 1;Figure 6 is a perspective view of the concrete block of Figure 1;Figure 7 is a front elevational view of a concrete block, according to a second variant of the design;Figure 8 is a right side elevational view of the concrete block of Figure 7;Figure 9 is a left side elevational view of the concrete block of Figure 7;Figure 10 is a top plan view of the concrete block of Figure 7;Figure 11 is a bottom plan view of the concrete block of Figure 7; and Figure 12 is a perspective view of the concrete block of Figure 7.