Stock fire, stock marine, and stock fire and marine insurance companies, of other States and foreign governments, to be licensed to do, in this Commonwealth, any one of the classes of business mentioned in section two hundred and two (202), subdivision (b) of this act, must have a paid up and safely invested capital and surplus, if a company of any other State, or a deposit in the United States, if a company of a foreign government, of not less than that required of domestic insurers to be authorized to transact the class or classes of business.
40 P.S. § 651