My brother traveled to Greece where he purchased this, during his stint during the Viet Nam war while he was in the service, which is how I know how to date this.
He passed, and while bringing some of his things home, the base fell off, so I assume it was cracked beforehand?
I remember him telling me that this was marble dust.
I glued it on best I could and you can barely tell from the front. If it does not sell I will send it to Goodwill as my tine apartment does not have room for things like this.

Ships within 24 hours of purchase; thank you for looking