Note From Polish Grandfather

any help my grandfather is polish and left my mom a note!!:
potwierdza niniejszem, ze cindy ztozyt(?) w _____ jako lokacje(?) procentwa 1% rocznie przy potraceniu podatku skarbwego.
zobowiazuje sie sume te wraz z procetcimi(?) wyptacic____za zwrotem

It goes something like this:

I herewith aknowledge that Cindy deposited in----- as a location a percentage of 1% annually after the withdrawl for the treasury tax.
It's an obligation to pay--------of the total amount along with the percentages after a return

Thank you!!
another question, on the note is says: either MK: 10.000 (or maybe UK 10.000) would MK be in polish marks? Is that a known abbreviation for currency?

MK is not polish. Poland uses a "złoty" currency which is abreviated as ZŁ or PLN.
Marks are used in Germany abreviated as DEM

yes it is
see
http://en.wikipedia.org/wiki/Polish_marka

True Poland had a Marka for 7 years abreviated as mp. It all depends when the note was written.

written in 1923
but def. says mk or uk, not mp