This Agreement may be executed in a number of identical counterparts which, taken together, shall constitute collectively one agreement; in making proof of this Agreement, it shall not be necessary to produce or account for more than one such counterpart with each party’s signature. Facsimile and/or electronic signature pages shall be effective for purposes of this Section 11.15. Handwritten signatures to this Agreement transmitted by telecopy or electronic transmission (for example, through use of a Portable Document Format or “PDF” file) shall be valid and effective to bind the party so signing. Each party agrees to promptly deliver to the other party an executed original of this Agreement with its actual signature, but a failure to do so shall not affect the enforceability of this Agreement, it being expressly agreed that each party to this Agreement shall be bound by its own telecopied or electronically transmitted handwritten signature and shall accept the telecopied or electronically transmitted handwritten signature of the other party to this Agreement.