US $7.2 million check used to pay for Alaska. Issued on August 1, 1868 and worth around $140 million today.
https://s3-us-west-1.amazonaws.com/h...k_fullsize.jpg
Previously:
https://www.homemadetools.net/forum/...171#post161163
https://www.homemadetools.net/forum/...2978#post77214
https://www.homemadetools.net/forum/...4061#post79263