Three of these Progressive Publications K84 cards are available, and while there is usually little to differentiate cards of this monument, one of these (Grade: 3, $6.50) was mailed in 1966 and has an official green rubber stamp on the reverse to indicate it was bought at the statue itself. It also has postmark smudging on the front. The other two were unmailed and could almost be sold as-new today (Grades: 1, $2).