Still leaning towards a custom job, but unless there is something engraved in the reverse I can't see anything marking it beyond the 10th SFG. And even then at one point this was the SF crest. If it IS super old, it might not even be in reference to 10th, but to the SF regiment. I can only speak to the War on Terror and beyond, but this crest is now associated with 1/10. The Trojan Horse crest is still worn on berets today at 1/10 both as a reminder of the unit's history and as a reminder of how the green beret was once unauthorized. Cool find in any event.