USS Sierra (AD-18) was a destroyer tender that served with the United States Navy from World War II to the 1990s. Estate find plaque presented to EM3 Michael R Cunanan, USN for service with Distinction USS Sierra (AD-18) the boat might be wood or plaster – can’t tell doesn’t feel like metal entire plaque is approx 12-3/4″ x 9-1/8″ has some scuffing and discoloring on the top. PHOTOS SHOW CONDITION, YOU BE THE JUDGE. We do not mark merchandise values below value or mark items as “gifts” – US and International government regulations prohibit such behavior. The Fine Print: While I sell everything “as is” – I take a lot of time to accurately describe every item, tell you what I know about the item and its condition. Please read the descriptions carefully. Get Supersized Images & Free Image Hosting. Create your brand with Auctiva’s. Attention Sellers – Get Templates Image Hosting, Scheduling at Auctiva. Com. Track Page Views With. Auctiva’s FREE Counter.