Just discovered that #s 838-841 were not list in Folder GJ in the Vault checklist database that is posted in Chop Country.
All four of these are Red Sox pitcher Pete Magrini -- the one and only time (so far) that Magrini has appeared in the Vault. Just an oversight, probably because they were not ID'd right away.
Cochise had these pegged all along, as he had them included in his customs.
Below are BJ839 and 841: