Edit: 
oh my, I also fell into the time warp, ha!
As said above, Modern game bantam seems very likely.
The variety closely matches a splash, or some variety of sport (commonly a Lemon Blue Sport, or a Silver Blue Sport)
I saw a note about the sport variety above, and If anyone is curious, I have some experience breeding them in the moderns.
The reason this bird is linked to the Lemon/Silver varieties without having much of the color, is because it is a “sport”, not the true variety. This variety carries genes for the Lemon/Silver, and breeding to the correct corresponding variety (Brown Red x Lemon Blue Sport= Lemon Blue, and Birchen x Silver Blue Sport= Silver Blue). The sport variety is most commonly produced by breeding the same variety of blue together (Lemon x Lemon or Silver x Silver), but can be reached in other ways as well.
It’s hard to say for sure which variety of sport (if it is indeed a sport, and simply not of the splash variety) your bird is without knowing it’s lineage, or until you see it’s offspring.
	
		
			
		
		
	
				
			oh my, I also fell into the time warp, ha!
As said above, Modern game bantam seems very likely.
The variety closely matches a splash, or some variety of sport (commonly a Lemon Blue Sport, or a Silver Blue Sport)
I saw a note about the sport variety above, and If anyone is curious, I have some experience breeding them in the moderns.
The reason this bird is linked to the Lemon/Silver varieties without having much of the color, is because it is a “sport”, not the true variety. This variety carries genes for the Lemon/Silver, and breeding to the correct corresponding variety (Brown Red x Lemon Blue Sport= Lemon Blue, and Birchen x Silver Blue Sport= Silver Blue). The sport variety is most commonly produced by breeding the same variety of blue together (Lemon x Lemon or Silver x Silver), but can be reached in other ways as well.
It’s hard to say for sure which variety of sport (if it is indeed a sport, and simply not of the splash variety) your bird is without knowing it’s lineage, or until you see it’s offspring.
 
	 
 
		 
 
		 
			
		
		
		
	
	
			
		 
			
		
		
		
	
	
			
		 
 
		
 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		