About this 3D model

"The gold piece is generally considered to be a coin, though ingots or trade bars made of gold or other materials may be worth multiple gold pieces. In coin form, it is generally described as “approximately the size and weight of a United States half-dollar coin” meaning 30.6mm in diameter and weighing 11.5 grams (approximately 40 to an avoirdupois pound). In “Basic” D&D (and previous editions) and First Edition AD&D, despite the described weight, gold pieces are considered to weigh a tenth of an avoirdupois pound (1.6 avoirdupois ounces) each for encumbrance purposes, with 10 gp weighing one avoirdupois pound. Indeed, in these editions of the game, the basic unit of weight/encumbrance is either the “coin” (cn in Basic D&D) or the “Gold Piece Weight” (gpw), either of which equals one tenth of a pound." - Dungeonsfandom.com