I said Girth Control

An initial look and these two cards appear to be the same but they would make a good choice for "spot the difference". The changes are quite subtle.

Both were published as "New  Donald McGill Comics" by D Constance Ltd. No. 761

The first card is perhaps the earlier version. My copy was posted in July 1946. on the reverse is the rhyme:

The war is won your £.s.d.

Has helped to bring victory,

But saving still will pave the way

To that new world, for which we pray

"KEEP SAVING FOR A RAINY DAY"

The second card (unposted, so no date) has the more usual (post war) version of the rhyme:

"KEEP SAVING FOR A RAINY DAY"

We saved to win the war,

Our efforts must not cease;

By saving more and more,

We'll surely win the peace!