Pewter Ashtray that says A woman is a woman but a good cigar is a smoke

This is an ashtray that looks to be pewter. It has around the rim "A woman is only a woman but a good cigar is a smoke". The ceneter part could use a cleaning but Im not familiar with how to do that and I dont want to mess it up. Other than that its in good shape. Very interesting piece I picked up at an estate sale a few years back.