China. Full Sheet. Can Someone Tell Me What They Are?

Hi.
This full sheet came out of the bottom of a recent Auction lot I won in the UK.
China is not my area and was just wondering if anybody can help with identification.
I have listed it on Ebay and after 2 days there are 4 watchers.
Your help would be greatly appreciated.

Many thanks in advance Peter in Jersey (the old one not the new one)

China,1944
"Refugees" issue (set of 6)
Yours is Michel # 614

You listed it for sale without even identifying it first? How on earth does one price it then?

Hi Vayolene.
Thank you so much for a quick reply. Very much appreciated.

Hi classic_paper.
A good question. As it's not something I collect I list it with a low starting price In the knowledge/hope that there will be at least two people who recognize the value (if any) and will bid for it. If there is only one then they get a bargain, For me that's the beauty of ebay.
I reckon "what goes around comes around". I pick up some great bargains on eBay and so should everybody else at times.

Happy Hunting. Peter.

That's a great philosophy, PAPAJ.

In case you were interested.
These sold for £16. to a guy in China.
Best wishes Peter.