| Month | Year | Condition | Price | |
 | Jan | 1978 | Good | $10.47 |
 | Jan | 1978 | Fair | $5.13 |
 | Feb | 1978 | Fair | $5.24 |
 | Feb | 1978 | Good | $10.48 |
 | Mar | 1978 | Good | $10.07 |
 | Apr | 1978 | Fair | $5.11 |
 | Apr | 1978 | Very Good | $13.23 |
 | Apr | 1978 | Good | $10.32 |
 | May | 1978 | Good | $10.19 |
 | Jun | 1978 | Fair | $5.06 |
 | Jun | 1978 | Fair | $5.06 |
 | Jul | 1978 | Fair | $5.14 |
 | Jul | 1978 | Fair | $5.14 |
 | Jul | 1978 | Fair | $5.14 |
 | Aug | 1978 | Good | $10.01 |
 | Oct | 1978 | Very Good | $32.81 |
 | Nov | 1978 | Very Good | $13.61 |
 | Dec | 1978 | Fair | $5.08 |
 | Dec | 1978 | Good | $10.14 |
 | Dec | 1978 | Fair | $5.08 |