The "Three-Ribbed Mercedes" Nanjiangshi (NJS) Triangular Stance Pair | 40.0mm x 38.0mm | NJS-1007

This listing features the exact pair of walnuts shown in the photos. Stock ID NJS-1007 is a naturally matched pair of traditional "Three-Ribbed" (San Leng Ben) Nanjiangshi walnuts. This pair measures 40mm in width and 38mm in depth, combining a rare three-chambered geometry with the solid, flat-base architecture of the historic lineage. Ready for immediate shipping.

• Stock: 1 of 1 (Single Inventory)
• Variety: Three-Ribbed Nanjiangshi Lion Head (San Leng NJS)
• Dimensions: 40.0mm (Width) x 38.0mm (Depth/Belly)

[About the Three-Ribbed Nanjiangshi Variety]

The Nanjiangshi variety is a historic lineage within the classic Lion Head family, recognized for its stone-like bone density. While a standard walnut grows natively with only two ribs, an extraordinarily rare genetic anomaly yields the San Leng Ben—the Three-Ribbed mutation. This structural miracle splits the shell into three balanced chambers, creating a triangular symmetry that resembles the iconic Mercedes-Benz three-pointed star emblem when viewed from the base. Combined with Nanjiangshi's signature flat bottom and prominent straight seams, this variety is highly valued for its physical density and distinct geometric handling.

[Product Characteristics of NJS-1007]

• The Triangular Ergonomic Geometry: Measuring 40.0mm in width paired with a 38.0mm belly depth. The 40mm profile ensures a highly substantial volume in the hand, while the three-chambered layout provides a completely unique tactile rotation. Instead of rolling two flat faces past each other, the three prominent vertical ridges engage the hand dynamically, filling out the palm without overstretching your grip.
• Textbook Flat-Base Stance: True to its premium lineage, this pair features an exceptionally flat, stable base that allows each walnut to stand completely upright on flat surfaces. The vertical seams are sharp and perfectly straight, diving symmetrically into the three right-angled corners.
• Brain-Coral Texture Matrix: The surface is formed by a tightly woven, deeply sculpted network of fluid ridges and pocketed valleys. This interlocking topography provides excellent natural traction against the skin, delivering an active and thorough palm massage during daily rotation.
• Resonant Stone Acoustics: Grown to full wild maturity with extra-thick internal chamber walls, this pair carries significant physical weight relative to its volume. When rotated past one another, they produce a distinct, high-pitched, metallic ceramic ring rather than a muffled wood clack.

[Maintenance & Aging Advice]

Because the "Nanjiangshi" variety features an extraordinarily high shell density and an intricate surface network of valleys, it is recommended to keep this pair in a sealed bag when resting between handling sessions for the first month. This practice safely traps natural skin oils to guide a uniform, blotch-free oxidation process across all three faces. Handling them directly with bare hands—completely skipping the use of gloves—is the definitive method to naturally develop a deep, translucent crimson patina.

[Specifications]

• Variety: Three-Ribbed Nanjiangshi Lion Head (San Leng NJS)
• Stock ID: NJS-1007
• Dimensions: 40.0mm (Width) x 38.0mm (Depth/Belly)
• Texture: Deeply pocketed, brain-coral-style vertical ridges arranged around a three-chambered triangular silhouette with a stable flat base.
• Best For: Enthusiasts seeking a full-sized 40mm classic pair that showcases rare three-ribbed Mercedes symmetry, heavy stone-like weight, and excellent structural balance.