SIXTH SUPPLEMENTAL INDENTURE DATED AS OF JUNE 15, 2012 to INDENTURE dated as of October 6, 2010 among MOLSON COORS INTERNATIONAL LP, as Issuer THE GUARANTORS NAMED THEREIN, as Guarantors and COMPUTERSHARE TRUST COMPANY OF CANADA, as Trustee

THIS SIXTH SUPPLEMENTAL INDENTURE, dated as of June 15, 2012 (this “Supplemental Indenture”), to the Indenture dated as of October 6, 2010, as supplemented by the First Supplemental Indenture thereto dated as of October 6, 2010, as supplemented by the Second Supplemental Indenture dated December 25, 2010, as supplemented by the Third Supplemental Indenture dated March 8, 2011, as supplemented by the Fourth Supplemental Indenture dated November 11, 2011 and the Fifth Supplemental Indenture dated May 3, 2012 (the “Original Indenture”), is entered into among MOLSON COORS INTERNATIONAL LP, a Delaware limited partnership (the “Issuer”), MOLSON COORS BREWING COMPANY, a Delaware corporation (the “Parent Guarantor”), COORS BREWING COMPANY, a Colorado corporation, MOLSON CANADA 2005, an Ontario partnership, CBC HOLDCO LLC, a Colorado corporation, COORS INTERNATIONAL HOLDCO ULC, a Nova Scotia unlimited liability company, MOLSON COORS CALLCO ULC, a Nova Scotia unlimited liability company, MOLSON COORS INTERNATIONAL GENERAL ULC, a Nova Scotia unlimited liability company, MOLSON COORS CAPITAL FINANCE ULC, a Nova Scotia unlimited liability company, MC HOLDING COMPANY LLC, a Colorado limited liability company, CBC HOLDCO 2, LLC, a Colorado corporation, NEWCO3, INC., a Colorado corporation, MOLSON COORS BREWING COMPANY (UK) LIMITED, an English private limited company, MOLSON COORS HOLDINGS LIMITED, an English private limited company, GOLDEN ACQUISITION, an English private unlimited company, and MOLSON COORS HOLDCO, INC. (collectively, the “Subsidiary Guarantors” and, together with the Parent Guarantor, the “Guarantors”), and COMPUTERSHARE TRUST COMPANY OF CANADA, a trust company duly existing under the laws of Canada (the “Trustee”).

WHEREAS, the Company, the Guarantors and the Trustee are authorized to enter into this

Supplemental Indenture pursuant to Section 9.01 of the Original Indenture;

NOW, THEREFORE, THIS SUPPLEMENTAL INDENTURE WITNESSETH:

That the parties hereto hereby agree as follows: