| Month | Year | Condition | Price | |
 | Sep | 1963 | Fair | $8.05 |
 | Mar | 1966 | Fair | $6.43 |
 | Jun | 1966 | Good | $7.97 |
 | Aug | 1966 | Fair | $5.08 |
 | Nov | 1966 | Fair | $4.68 |
 | Apr | 1967 | Fair | $4.39 |
 | Dec | 1967 | Good | $16.11 |
 | Jan | 1968 | Fair | $15.57 |
 | Jan | 1968 | Good | $18.57 |
 | Feb | 1968 | Good | $12.92 |
 | Mar | 1968 | Good | $6.82 |
 | Apr | 1968 | Good | $6.34 |
 | May | 1968 | Very Good | $11.99 |
 | Jun | 1968 | Very Good | $11.69 |
 | Jul | 1968 | Very Good | $10.85 |
 | Jul | 1968 | Very Good | $10.85 |
 | Aug | 1968 | Good | $5.30 |
 | Aug | 1968 | Good | $5.30 |
 | Sep | 1968 | Good | $5.84 |
 | Oct | 1968 | Fair | $5.09 |