71 Pa. Stat. § 1707.5
Such bonds are hereby made securities in which all officers of the State and its political subdivisions and municipal officers and administrative departments, boards and commissions of the Commonwealth, all banks, bankers, savings banks, trust companies, savings and loan associations, investment companies, and other persons carrying on a banking business, all insurance companies, insurance associations, and other persons carrying on an insurance business, and all administrators, executors, guardians, trustees and other fiduciaries, and all other persons whatsoever who now or may hereafter be authorized to invest in bonds or other obligations of the Commonwealth, may properly and legally invest any funds including capital, belonging to them or within their control, and said bonds or other securities or obligations are hereby made securities which may properly and legally be deposited with, and received by, the Federal Reserve Bank, any State or municipal officers or agency of the Commonwealth for any purpose for which the deposit of bonds or other obligations of the Commonwealth is now or may hereafter be authorized by law.
Said bonds shall have all the qualities of negotiable instruments under the law merchant and the negotiable instruments law of the Commonwealth of Pennsylvania.
71 P.S. § 1707.5