The left outlane insert shows the misspelled word "sheild". We don't know if this was corrected at any time during the production run. The owner of the prototype game shown here reported these differences from production games (other differences may be present): Serial Number X150006 - X is for Prototype. Circuit boards under playfield are red-colored. Playfield has hand-drawn graphics and hand-made stickers under the mylar overlay. Production Run Records for Swords of Fury: Production Start Date: Jun-24-1988 Production End Date: Sep-19-1988 Production Run Quantity: 2705 First ship date: Jun-24-1988 Last ship date: Dec-5-1988