18 printings of Circle of Protection: White
They range from $0.10 to $31.00 — a 310× difference for a card with the same name. The set code and collector number printed along the bottom edge are what tell them apart.
| 30th Anniversary Edition | 30A 311 | — |
| Eighth Edition | 8ED 14★ | — |
| Summer Magic / Edgar | SUM 13 | — |
| Seventh Edition | 7ED 10★ | — |
| Limited Edition Alpha | LEA 13 | $31.00 |
| Limited Edition Beta | LEB 14 | $6.00 |
| Intl. Collectors' Edition | CEI 14 | $3.84 |
| Collectors' Edition | CED 14 | $1.99 |
| Unlimited Edition | 2ED 14 | $1.13 |
| 30th Anniversary Edition | 30A 14 | $0.95 |
| Fifth Edition | 5ED 21 | $0.26 |
| Seventh Edition | 7ED 10 | $0.22 |
| Classic Sixth Edition | 6ED 12 | $0.18 |
| Revised Edition | 3ED 13 | $0.17 |
| Tempest | TMP 13 | $0.14 |
| Eighth Edition | 8ED 14 | $0.12 |
| Fourth Edition | 4ED 18 | $0.10 |
Not sure which one you are holding? OtterDex reads the set code and collector number off the card and tells you.