Question on grading Pennies professionally

[goodcents]

Does anyone on here have older pennies graded by any of the big three grading companies?

Any advice. What's the best way to go about it to spend the least amount of money.

I have some old BU canadians I'd like to possibly see about getting graded. These are out of OBW rolls.

It may be cost prohibitive but sounds interesting to me.

Thanks for any advice or links that may help.

Joe