Help Chinese Pewter Identification

Can anyone identify the Chinese pewter marks (pic at bottom) Love to know where it came from. I'm guessing it was a tea caddy but could be wrong.
Many thanks.

 

They're usually Swatow, I think.

 

Thank you.
Just checked with some of the Swatow marks online and the characters are different for the ones I can find posted though the caddy does look like some of the Swatow pieces.

 

This is a pewter tea can. http://www.997788.com/80063/auction_1345_7694931.html

This link shows a can with same seals on the bottom.

The 4 chracters on right side 潮城 春记 Chao Cheng Chung Ji where Chao Cheng means Chao town， and Chun Ji means Chun shop.

The 4 characters on the left are 包换点铜 Bao Huan Dian Tong, They have the meaning of "Guarantee to exchange for copper". However, I do not know what they really meant in old China.

I would say it is the Republic period, say 1940s