Can anyone identify these blue ceramic vases thanks?

I would very much appreciate any information on these two blue & white vases which I assume to be Chinese! I am led to believe they are possibly several hundred years old but this could be incorrect, they have been in my family for around ninety years.

The details are at: http://krusty.idx.com.au/vases/vases.htm

Thanks!!!!!

go to www.gotheborg.com and search. The site is valuable and worth studying.

Thanks StT, what a great site! I couldn't really identify them but it certainly is a good start!!!

The marks are for the kangxi period (1662-1722), and would normally, if period, contain six characters. I would think that the items (ginger jars), are actually late 19th century, as this was a typical way of marking at that period.