(3) If the effect of the payment of benefits for a month before the month you file would be to reduce your benefits because of your age, you cannot be entitled to old-age, wife's, husband's, widow's, or widower's benefits for any month before the month in which your application is filed, unless you meet one of the conditions in paragraph (a)(4) of this section. (An explanation of the reduction that occurs because of age if you are entitled to these benefits for a month before you reach full retirement age, as defined in § 404.409 , is in § 404.410 .) An example follows that assumes you do not meet any of the conditions in paragraph (a)(4) of this section. Example: You will attain full retirement age in March 2003. If you apply for old-age benefits in March, you cannot be entitled to benefits in the 6-month period before March because the payment of benefits for any of these months would result in your benefits being reduced for age. If you do not file your application until June 2003, you may be entitled to benefits for the month of March, April and May because the payment of benefits for these months would not result in your benefits being reduced for age. You will not, however, receive benefits for the 3 months before March.