Mr. Robot adds past sales based on just the N# when other information is available. If these additions are not approved by the referee (discussed in other posts) then if the N# is incorrect the sale is put on the wrong page. An example:
N#1633 has two sales for this coin N#16333 The reason is because Katz used the wrong N#:
The KM number was also available. Perhaps Mr. Robot could check the KM number against the N# page?