2003 La Spinetta Moscato d'Asti 'Bricco Quaglia'

[TheEngineer]

Two more bottles left and took one tonight. This thing is still beautiful. Less spritz but still with some bubbles left, will have to open up last bottle soon. Wine is denser than before, with a dense peach nose, honey, and seems to be thicker than before. Colour is darker now too, perhaps some oxidation?

When I opened the bottle, there was indication of a leak (sticky on the top and the cork showed signs as well. It could be that this was the problem. I stored this bottle on its side for a while until I saw on the label to not do that. I've had it stood up every since. Anyone else seen instructions like that? Is that true for any other bubbly?