Perhaps the date of instrument is the date of signing of the certificate and the date of record is the filing date with the registering authority.
It would help to know where this happened. Link to original?
SHADUR, SADUR, SHADER, SADER, CHADOUR, SADOUR, SHADOUR, SZADUR from Salakas, Lithuania
MINDEL, MINDELL from Utena and Vyzuonos, Lithuania
FELLER from Pabrade, Lithuania