Mike, don't be too confused.
We're on the correct series of reel. When I first looked at your photos, I began searching Morrum, which was the cadillac version of Abu's barstock frame with mag brake.
The Black Max, Silver Max, and Pro Max were the manstream Ambassadeurs from the '90s (die-cast frame), made to compete with Shimano Calcutta, and bridged the gap before low profile reels arrived.
Their big attribute was improving frame stiffness and lowering frame weight over pillared-brass frames.
There were enough traditionalists to keep the Ambassadeur C3s and C4s going, but serious bass fishermen locked onto the new reels and, again, they were all replaced and their names taken by later low profile reels.
From a distance, it's tough to identify the spool size, because these reels were made from 1600 to 6600 sizes.
You can tell that better than we can.
For comparison, here's the forged frame on a new top-line Abu Revo. Of course what you gain with LP reels is getting the spool and your thumb closer to the rod. They still make round reels from BFS to offshore sizes, and Shimano pretty much dominates that market.
