This item is a symbol of protection. Most religions on Earth attributes special powers to number 5, which represents the human body; 5 senses, 5 elements, 5 pillars etc.
There are also 5 virtues; Love, Wisdom, Truth, Kindness, Justice. It is in the efforts that we make to manifest these 5 virtues that the Divine protection attributed to this piece becomes effective.
This belonged to a Freemason who was a majestic leader and extemely powerful Sorcerer. He was the leader of the 5th Reserve and so he utilized this as a strong protection piece pulling from the attunement of the associated powers of the number 5.
Black, is a color for balance and grounding... it is a great color for using in all manner of magic. Most notably, it is quite useful within protection spells, helping to ground and balance negativity, thus the reason he made this piece black, as most Freemason pieces are showcased with their typical blue background.. this was to showcase that it was special and was utilized by the Freemason Sorcerer as his primary piece -- at his death it was willed to his son, and later was sold at an Estate sale.
This will protect you in , all the aspects of the wisdom and power that virtues with the sensory elements of, the attributes of the 5 key areas of your life~