This is a single year production lamp that underwent a major revision near the end if it's production run, producing a late, or transitional model 5 version. The early version uses the model 4 burner base labeled model 5, model 4 wick raiser and the model 4 table lamp bowl. The earliest versions are reported to have a model 4 gallery without the model 4 stamp.

Near the end of it's one year production run a number of changes were made. A new burner base was introduced that used a screen type body and an insulated outer wick tube. The round hole pattern introduced on the bottom half of the #4 wick carrier now covers the entire carrier. New tooling is used to create the chime that holds the top half of the bowl to the bottom half. This creates a rounded wide chime on the newer lamps (Older ones had a flattish wide chime).  This burner appears to be the same as the early model six burner in all things except the number on the knob.

The model 5 font lamp is still 1-1/2 qts but gets a redesigned lower bowl half that included stiffener rays at the base like the table lamps have. This is unique to model 5 fonts.

These illustrations show the early (left) and late (right) versions of the model 5 burner. The early model 5 burner is basically the same as the 3 and 4 burners except for the labeling on the wick adjuster knob. The late model 5 burner design was carried into the early model 6 burner. The obvious change is that the slots on the side of the burner has been replaced with a perforated metal screen.

This late burner incorporates an insulated outer wick tube. I do not know what problem the insulation tried to address but it was abandoned between one and two years into the model six burner production run.

The third change in the burner is the air distributor design. The two piece design was replaced by a single piece design.

Since the late model 5 burner is virtually identical to the early model 6 burner I find myself wondering how many late model 5 lamps have been sold and collected as model 6 lamps because someone misread the 5 to a 6.

Model 5 wick carrier.

Model 4 and model 6 wick carriers have also been found in model 5 lamps. The model 4 wick carrier may have been provided with early model 5 lamps

The model 5 flame spreader is the same overall size and shape as the model 4 flame spreader. A taper has been added around the top edge and a row of holes added to the angled section.

Aladdin model 1 through 6 used a filler cap with a flower pattern on top. There were two varieties, vented, with a hole in the centre top and unvented.

Models 1 through 5 lamps with slotted burners used the vented cap.  late model 5 and model 6 screen burners used the non vented type.