Contact Mercedes Classic Center - provide ownership proof via email - pay $150 - you will receive the data card info via email. It may or may not look like the original data card but you will have all the data.
Contact info:
Tom Hanson
Supervisor, Parts Sales
Mercedes-Benz Classic Center
Mercedes-Benz USA
9 Whatney, Irvine, CA 92618
Email: thomas.hanson@mbusa.com
Phone: 949-598-4842