Do you have a photo of the serial number? They appear often to have been somewhat "sloppily" stamped in with the numbers in and out of alignment. Perhaps it's a double-struck "V" that looks like a "W" -- all of the V machines were made in 1908-9.
http://ismacs.net/singer_sewing_machine_company/serial-numbers/singer-sewing-machine-serial-number-database.html