Peco
Code 75 Streamline Large Radius Turnout

Right Hand, Electrofrog
Walthers Part # 552-1914, p. 275 Walthers 2012 HO Scale Reference
HO scale, $29.99, currently in stock at Walthers

 
Nominal radius: 60" (1524mm); angle: 12 degrees; length: 10-5/32" (258mm).