Nevada Revised Statutes Title 32. Revenue and Taxation § 372.035. “Occasional sale” defined

(a) A sale of property not held or used by a seller in the course of an activity for which he is required to hold a seller's permit, provided such sale is not one of a series of sales sufficient in number, scope and character to constitute an activity requiring the holding of a seller's permit.

(b) Any transfer of all or substantially all the property held or used by a person in the course of such an activity when after such transfer the real or ultimate ownership of such property is substantially similar to that which existed before such transfer.