History of item: Carl Yastrzemski signed game used cap. This listing is for the Carl Yastrzemski Signed and Game Worn Roman Pro Boston Red Sox Cap as seen above. The pictured hat is the actual signed piece of memorabilia that you will receive and it has been signed on the underside of the bill by Yaz with a nice full signature."CY" is written in an unknown hand on the inner headband and the 7 1/4 size tag is present. While the letter states that this was worn in the 1970's, we believe this would have been worn during either 1977 or 1978 as that is when Roman Pro was worn by the Red Sox. Consequently, this listing is just for the pictured hat with the original letter of authenticity. Please take a look at our other items available for sale. The item "CARL YASTRZEMSKI Signed Game Used Worn 1970's Roman Pro Cap Boston Red Sox HOF" is in sale since Monday, April 20, 2020. This item is in the category "Sports Mem, Cards & Fan Shop\Autographs-Original\Baseball-MLB\Hats". The seller is "collectingparadise" and is located in Salem, Oregon. This item can be shipped worldwide.