Awesome 3 Navy USN Seals Fin Tribute Challenge Coin SEAL TEAM IV & UDT 21 Posted on June 27, 2023 by admin Awesome 3 Navy USN Seals Fin Tribute Challenge Coin SEAL TEAM IV & UDT 21!! Pre-owned in good used condition. Feel free to ask any questions. Items are untested unless stated. Store Policy and Guidelines. Thank you for considering us.