Vintage climbing/ mountaineering backpack by wyeast mountaineering

Description

Old mountaineering backpack.  I am guessing from 70s. Belonged to a climber friend who passed away. It is crusty,  slightly musty, dirty, stained, rusty. And oxidized.  The liner inside is flaking. I tried to remove most of it. The zippers are sticky but work. The loop holes are oxidized. The clasps and tighteners are rusty. There are also a bunch of stains. Has internal hard frame. All that aside its a cool old school pack.  Please ask any questions.  ++NO RETURNS ++ thanks