217.16—Filing date.
An application filed in a manner and form acceptable to the Board is officially filed with the Board on the earliest of the following dates:
(d)
On the date the application was mailed, as shown by the postmark, if using the date it is received will result in the loss or reduction of benefits.
(e)
On the date the Social Security Administration considers the application filed, if it is filed with the Social Security Adminstration or the Veterans Administration.