Laser contrasted golf club head and manufacturing process

A golf club head comprising:

• a club face located at a frontal portion of the golf club head, the club head further comprising;
• an external surface, having an external surface roughness formed by a plurality of micro-grooves of substantially circular shape, and
• wherein the external surface further comprises;
• a central region occupying a central third of the club face, measured horizontally,
• a toe region occupying a region toeward of the central region, and
• a heel region occupying a region heelward of the central region
• an internal surface, having an internal surface roughness, and
• a body portion located rearward of the club face,
• wherein when a plurality of imaginary vertical sampling lines are defined within an area measuring about 20 mm×20 mm located in the central region and centered with respect to a geometric center of the club face the central region of the external surface has a Central Region Average Vertical Surface Roughness Value of greater than about 100 μin, and
• wherein the Central Region Average Vertical Surface Roughness Value is greater than a surface roughness value of the internal surface
• wherein the plurality of micro-grooves has an average groove depth of between about 45 μm and about 60 μm.

A golf club head comprising:

• a club face located at a frontal portion of the golf club head, the club head further comprising;
• an external surface, having an external surface roughness formed by a plurality of micro-grooves of substantially circular shape, and
• wherein the external surface further comprises;
• a central region occupying a central third of the club face, measured horizontally,
• a toe region occupying a region toeward of the central region, and
• a heel region occupying a region heelward of the central region
• an internal surface, having an internal surface roughness, and
• a body portion located rearward of the club face,
• wherein when a plurality of imaginary vertical sampling lines are defined within an area measuring about 20 mm×20 mm located in the central region and centered with respect to a geometric center of the club face the central region of the external surface has a Central Region Average Vertical Surface Roughness Value that is greater than a surface roughness value of the internal surface, and
• wherein the plurality of micro-grooves has an average groove depth of between about 45 μm and about 60 μm.