This house that I currently occupy is a bit of a hodgepodge. The oldest parts of it I would guess date back about 100 years (Hey, this is a young country - that counts as old here!) and I think these windows at one end are original. The glass in them is rippled and of uneven thickness and distorts the reflections of the new punga fronds hanging over the deck. The double reflections, off the front and the back of the pane, are much less noticeable in real life. I think the wetware edits them out.