There are a number of common variations that can be done to customize a serp top die. These usually entail additional cost and/or lead time.  These variations can be used singly, or in conjunction with others for additional customization opportunities.

Hump Position Variation

Half Serp

Corner Treatment Variation

Rounded Corners

Corner Treatment Variation

Half Serp

Corner Treatment Variation

Face Checks

Corner Treatment Variation

Bottom Checks

Serp Drop Variation

Exaggerated Serp Drop

Serp Drop Variation

Extreme Exaggerated Serp

End Variation

Tapered Ends

End Variation

Reverse Tapered Ends

Another Variation

Three-Fourths Serp French Curve

Another Variation

French Curve Bottom Corner Checks

Another Variation

Front Chamfers