Nickname: The Golden Armor
Designer: Anthony Stark
Worn By: Anthony Stark
Appeared: Tales of Suspense #40

Design Notes :

Shell Composition:  Semi-rigid interior with 3D knitted metallic exterior of a lightweight iron alloy provided protection from physical attacks as well as heat, cold, some energy forms, and acid. Improved the suit surface with gold plating for early force field experiments.

Power Source and Energy Information:  The armor ran on batteries and was able to recharge itself from electrical sources.

Control Systems Interface:  All of the armor's devices and functions were manually controlled by the wearer.

Weaponry: 

Monobeam (Mark 2).

Portable Proton Beam Generator (useful range was only several yards).

Sledgehammer (first Hulk-Buster enhancement?). 

Reverse Energy Beam.

Mirrors (used to make multiple images of himself;, modifies the chest beam to blast heat.

Searchlight Mode.
Life Support Equipment:  Pacemaker in the chest-plate.

Boot Jets (Mark 1):  Provided limited flight. Steering while flying was accomplished by body-english.

Equipment:

Suction Cups:  They mounted to the knees and hands of the armor enabling it to "stick" to walls and ceilings.
Miniature Buzz Saw:  It is actually more like a hack-saw that extended from the fingertip of the gauntlet.
Electromagnets:  By attaching standard electromagnets to his transistors, Iron Man could increase their effectiveness by a number of magnitudes. This allowed him to literally pull things to him and by reversing the polarity, push things away.
Rollerskates:  Collapsible into the boots and rocket powered.

Electrical Field Generator.

Solar Recharger.

Force Field.

Hand Drills.

Public Address Speakers.

Power Clippers.

Sensors:  Short-Wave Two Way Radio; Radar;  Also contained a tape recorder. 

Notes:  Still based on the Model I Armor. Powered by flat linear armature DC motors. Employed negative feedback motion sensing.  Kilt-covered groin segments. Improved communications with the addition of a telescoping antennae. It was built to be flexible enough that it could be collapsed and hidden in a secret briefcase compartment, allowing for quick access. In addition, the chestplate (which still had to be worn at all times to keep Stark alive) was slimmed down so that he could conceal it under his clothing.

(Thanks to Jason Langlois and, as ever, Paul Livingston, for their work!)