The Parthenon is an organic bimetal yo-yo from Throwing Sideways, described as a revised Sistine design with a 7068 aluminum body and stainless steel inner rim. A 2021 fundraiser reported that the initial production shipment was stolen and sought replacement preorders; its early-November target does not establish the first retail date. A retailer later listed the model, including an Unknown colorway.
Sources: 2021 fundraiser; retailer listing.
