(b) When an offer for sale of an autographed sports collectible takes the form of a televised broadcast, such offer shall include a written on-screen message that shall be prominently displayed and clearly visible for no less than five seconds at the beginning of each segment of broadcast for each item offered for sale and displayed thereafter for no less than five seconds at ten minute intervals during said segment, that reads: A WRITTEN CERTIFICATE OF AUTHENTICITY IS PROVIDED WITH EACH AUTOGRAPHED COLLECTIBLE, AS REQUIRED BY LAW.
(c) When such offer for sale takes the form of a radio advertisement, such advertisement shall include as part of the oral message the disclosure required by paragraph (b) of this subdivision.