Hey, I have a 1952 Sports Coupe with a 1951 grill. You definitely have the 52 grill and the accessory pieces on the bumper. I've owned the 52 for 23 years. You can read the info off the tag under the hood on the cowl. However, in some states the VIN was assigned to the motor which can be a real pain because the motors have often been replaced.

Go to www.nationalchevyassoc.com. They support 49-54 Chevys with lots of essentials. Your model number is 2154 and it was known as the Bel Air Coupe. The National Chevy parts catalogue has a model identification section. From a practical standpoint, all 51 and 52 parts interchange. Mine is getting a motor transplant: 1998 Vortec 350. Not recommended for the faint of heart and many would say not recommended at all.

Happy cruising.