Front view. Although the plate looks brand new, it's actually not: issued in 1999 or earlier. The single-letter-prefix enamel plates have been available as reissues for far longer than the two-letter ones, but I can't rule out, that this is an original number from the 1950s.
Another thing people may notice is the unusual shape of the plate. Modern motorcycle plates are square, but the enamel plates were narrow rectangular as seen here.