It still looks like 297 to me, although the "7" could be a light strike? The grips are chocolate brown with the intertwined MD and 1W-41 inside. The barrel assembly has Eagle 88 on both sides, and an eagle over "something"? (hard to read))twice on the right side. One is on the locking block, the other behind the block. The right side of the slide has an Eagle 88, followed by an Eagle over something?, then another Eagle 88. The left side of the frame has the serial number followed by and Eagle 88. Sorry I can't read those Eagle "somethings", but my magnifying glass just can't make it out. Hope the above helps.
Tha magazine has an Eagle 88 on the backstrap, near the base. It does not hold the slide open, by the way.