The Postal Service is distributing a stamp with no price to post offices for possible use when new rates are set for first class mail.

The denomination of the stamp will be whatever rate the Postal Service Board of Governors chooses Friday for first class mail.

The stamp pictures an eagle above the words "U.S. Postage" and a leter "A" in place of a price. They were produced in 1975 for possible use if first class rates were changed with little advance notice.

That is the situation now because the Postal Rate Comission last Friday rejected the Postal Service's plan to keep the fist class rate at 13 cents for personal letters and raise it to 16 cents for business mail.

Instead, the rate commission recommended an across-the-board 2-cent increase to 15 cents. New rates could go into effect as early as the end of this month.

The nondenominated stamps were printed in sheets, coils and booklets. Embossed stamped envelopes also were produced.

The Postal Service said supplies of 13-cent stamps are abundant, production of 1-cent and 2-cent stamps has been increased so persons with supplies of 13-cent stamps can use them to meet new rates, and production of a 15-cent stamp bearing the portrait of Oliver Wendell Holmes soon will be increased.