The Real McCoy's Dead Stock USN Mug
Original Dead-stock US Navy mug. This original US navy mug cup is from the 40'ies and 50'ies, so they are real vintage pieces and not replica's.
Pyrex actually started only later in the public area. They are a part of the Real McCoy's souvenir collection available only at some accounts.
Made by Pyrex Inc, in USA.