Olive Egger's heritage?

[Peep_Show]

Just got a 5 m.o. Olive Egger roo, but no idea what breeds are in his makeup. (He was an incorrectly sexed pullet, so his owners had no idea what went into their chick that they purchased.)
He has a single comb, yellow legs, overall color is a silvery gray with cream tones on the neck feathers, black tail, spangled chest, fairly deep body.

Anybody have a similar bird? Anybody want to take a guess as to what this guy is?

 

[RoostersAreAwesome]

He’s beautiful! Probably a mix of mixes (olive egger x olive egger?). He could have some silver legbar in his background.