Still looking for swim platform ladder

[wndsr]

I am still looking for the original style section of the swim ladder that folds down into the water and is stowed against the deck ladder when not in use for my 1973 53' Classic. I suppose some detailed photos and measurements would be ok as a pattern to make one. But was hoping to find one that has been removed and no longer needed. I have the section that goes from the swim platform to the deck.
Thanks