Pretty cool. I agree with above, 20th Century. I would suggest these are likely custom plates for centennial reenactor clubs.
THere was a 1st Virginia Volunteers reenactment club at Norfolk in the centennial:
From the Virginian-Pilot and Evening Star, April 23, 1961:
View attachment 490279
There was a 17th Virginia Infantry reenactor club in Alexandria, VA in the earl 1960s...
From the Evening Star, Washington, DC, March 4, 1963:
View attachment 490278
View attachment 490280