Another thread brought to my mind something I'd been discussing with the local cobbler. How did all that Russian calf they found sunk 'neath the sea preserve itself for so long? Was it the quality of the leather? For surely it would've rotted? Or was there some sort of oxygen that hadn't escaped during packing? Or, is it more likely, that it was just the formula that was preserved and I am extremely active in imagination to think the Russian calf being sold today is from the late 1700's?