Pretty sure they will be reflectorized (question 13 on the FAQ link). A little off topic but my neighbor has a 1960 Porsche and last year he sent off a letter to the CA DMV requesting a set of 1956 yellow plates. He was told that they had some available and for a nominal cost they would mail them out to him. When he got the plates he couldn't believe what he got, a pair of un circulated brand new '56 plates in their original mailer envelope!
John