I have an old school Gen 1 HMG Porter 3400 for sale.  It is in great condition and even has a bit of “patina” on the bottom from an especially rainy trip I took.  Things to know about this pack:

• No awkward tiny built-in hipbelt pockets.  Includes a pair of x-pac MYOG hipbelt pockets.
• No aluminum stays.  I never used them and lost them in the shuffle.  You can order new ones from HMG for $15
• Old School Logo….super cool IMO.
• Includes stretch mesh shove-it pouch for the back.
• Includes 2 detachable water bottle side pouches.
• Weight: 2lbs

Pics and Pricing below.