Yes it will.
I had mine imported from the US and it works in Cyprus. Same bands as the UK and the rest of Europe, so you are good to go.
Also as far as I know N900 was only made with one RM code so no different variants exist as far as the frequencies are concerned.

The region codes are a different matter and have to do with regional settings like hardware keyboard characters.
And also unlike most other Nokia, SE and other brands you can flash any region firmware on yours and be done with it (that it using only the stock cable and flasher).
For any other phone on the market today that's a HUGE PAIN in the @@S.