huikee swatow pewter set appraisal

I have huikee swatow pewter I bought in an estate sale. I did some research online and found out that these antiques are chinese but not sure of the year. Furthermore I did some research and found that the price on huikee swatow pewter vary. However I was unable to find the exact sets and pots online. The engraving on these pots are dragons. Can any tell me how what era these are from? and how much they're worth? Also if someone can help and tell me what each of these pots are called or rerfered to.

Mike

Fair