Specimen certificate evidencing shares of Series 1 Non-Convertible Preferred Stock

Exhibit 4.3

The shares of stock represented by this certificate have not been registered or qualified under the Securities Act of 1933, as amended (the “Act”), or applicable state securities laws and may not be sold, transferred, assigned or otherwise disposed of unless registered or qualified under the Act and such laws or an opinion of counsel satisfactory to the Company is furnished to the Company to the effect that such registration and qualification is not required.