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- Rock Hydra — 2ED 172 Unlimited Edition
- Rock Hydra — SUM 173 Summer Magic / Edgar
- Rock Hydra — CED 172 Collectors' Edition
- Rock Hydra — LEA 171 Limited Edition Alpha
- Rock Hydra — LEB 172 Limited Edition Beta
- Rock Hydra — FBB 173 Foreign Black Border
- Rock Hydra — CEI 172 Intl. Collectors' Edition
- Rock Hydra — ME4 133 Masters Edition IV
- Rock Hydra — 30A 464 30th Anniversary Edition
- Rock Hydra — 30A 167 30th Anniversary Edition
- Rock Hydra — 3ED 173 Revised Edition