An Act amending the act of July 5, 1947 (P. L. 1258, No. 514), entitled "An act authorizing and empowering city treasurers of cities of the second class to sell at public sale, lands or real estate upon which the taxes, assessed and levied by the city or school district, are delinquent and unpaid;....," providing for the collection of municipal claims and liens, changing the periods for advertisement and redemption and establishing additional methods of perfecting title and selling property acquired by treasurer's sales.