No.
Michaelis doesn't have to literally pronounce that the order was received on the 13th. Just read his testimony and if you use your common sense, you'll conclude that they did in fact receive the order on that date.
"common sense" is what people claim when they don't have any actual evidence and want to pretend that conjecture is evidence.
No. Myers stated
as a fact in his blog article that "Seaport Traders also received Oswald’s mail-order for the .38 caliber revolver on March 13, 1963". He was wrong to state this as a fact and his gigantic ego didn't allow him to admit it.
Iacoletti isn't really interested in finding the truth. However, if any of you have questions about the issue of what date the order for the revolver was received, ask me and I'll elaborate.
"Truth" is not defined as Bill Brown's (or Dale Myers') "common sense" assumptions.