Skip to content

Pebbled Surface

Pebbled Surface.  A background texture of raised dots or tiny hemispheres, each of which is called a BOSS. This form of texture can be made by modeling or by the use of the dapple tool in the negative model or in the die, or by a puncheon with an incuse cupped hemisphere. The Japanese developed this surface to a high degree for tsubas, they called this texture "fish roe surface" (nanako), where the bosses were as small as one-hundredth of an inch diameter. A pebbled surface is the opposite of dappled surface (where the dots are sunken indentations).  See dapple tool, dapple surface.

excerpted with permission from

An Encyclopedia of Coin and Medal Technology

For Artists, Makers, Collectors and Curators


Roger W. Burdette, Editor

NNP is 100% non-profit and independent // Your feedback is essential and welcome. // Your feedback is essential and welcome.