The ignition is at least 2 amps and plenty enough to run the battery dead quickly if left on. It only draws current if the points are closed, so it's a crapshoot whether it was drawing current or not when you left it on.
Do you have a clock? If so, and if the car was allowed to run dead sitting, the points in your clock are probably welded together. You would see this draw with the key off though.
The ignition is at least 2 amps and plenty enough to run the battery dead quickly if left on. It only draws current if the points are closed, so it's a crapshoot whether it was drawing current or not when you left it on.
Do you have a clock? If so, and if the car was allowed to run dead sitting, the points in your clock are probably welded together and some of the current you are seeing is trying to burn the clock's winding up. Disconnect it and see if anything changes. If the car won't see daily use, just leave it disconnected.
