Answer:
According to the American Bell Association International forum, this bell is probably worth $200-300, depending on condition.
Lakewood Foundry of Chicago was owned and operated in Erie, PA, by Montgomery Ward c.1904-1920. The foundry primarily made stoves and related cast iron parts. Bells bearing the Lakewood Foundry name are believed to have been manufactured by a third-party, but branded for sale through Wards, Sears and other retailers.
The origin of your bell is uncertain because Montgomery Ward prohibited foundries from including their mark on the product; however, if the words "crystal metal" are stamped anywhere on the bell, it may have been manufactured by C. S. Bell Co. of Hillsboro, Ohio. There were a huge number of foundries operating during the "iron age" that contracted each others services as needed. This makes tracing the foundry responsible for creating your bell difficult to impossible.