Old picture of Gladiator\'s helmets

[Tib. Gabinius]

And to mention it, often the weapons of the gladiatores are stilicised (right english word aelia?) shown at the edges of the tombs or reliefs.
So this would be compare to this.
But we dont know much about this stone, so it really could be possible, that there a spetators or other gladiatores were be shown.
But personally i would give this a chance of less than 30%.