Does this shape appear in other series?  Yes - 500 Series 524; Later Series 24. Curiously, it also appears with another Early Series number, Early Series 28, thought to be a mistake.

There were three size variants; a small 4 inch size (10 cm); a medium 6 inch size (15 cm); and a large 9 inch size (22 cm).

At first, the suffixes used to denote these sizes were S - M - L, with 'M' denoting Medium size not its usual meaning of applied decoration. Then on some examples 'M' is expanded to 'Med'.  Later, the suffixes changed to inch numbers, 4 - 6 - 9.

Medium size; height 15 - 16  cm.

Large size;  height 20 - 22 cm.

Here the 'M' denotes applied decoration which is its more usual meaning.

The size suffixes s, Med and L have been over-written by inch suffixes 4, 6 and 9.

Small size;  height approx 10 cm.

Early smooth gumleaf

Later veined gumleaf

Grapevine

Base incised Remued 42 L

Hole near the base for an electric cord.

Several other vase shapes are also known with lamp versions; click here.