rare? [opgelost]

I'm new to this site, i've been adding my coins to my collection and added one that someone had commented on as rare. Does this mean that it may be valueable?

Hi ! What coin is it ?

Half Penny George VI
Year: 1940

https://en.numista.com/catalogue/pieces870.html

It's strange, it's a very common one !  
... such as 1946 ...  

1940 18,360,000 0.10 0.25 0.50 7.00 —
1940 Proof — Value: 600
1941 27,312,000 0.10 0.25 0.50 6.00 —
1941 Proof — Value: 600
1942 28,858,000 0.10 0.20 0.50 6.00 —
1942 Proof — Value: 600
1943 33,345,999 0.10 0.15 0.50 6.00 —
1943 Proof — Value: 700
1944 25,138,000 0.10 0.15 0.50 6.00 —
1944 Proof — Value: 700
1945 23,736,000 0.10 0.20 0.50 6.00 —
1945 Proof — Value: 700
1946 24,365,000 0.10 0.20 0.50 6.00

thats what i was thinking, i mean i don't know much about coins i've had quite a few that i collected as a kid and i stumbled across this site and decided to find which ones i have. (still trying to find them all theres that many)

err. reviving a very old thread here. but: Schön and Schön catalog says for both 1940 and 1946 coins
a significant higher prize at about 4€ VF and 10€ XF, while other mintages are about 1€/3€.
can anyone confirm this?