The numbers 2817 are embossed on the original balance

Your balance looks like it could be a match for either our S351-29 or S390-29, depending on the size of the bottom fitting. That's the only difference between them. You'll need to measure your bottom fitting and review our example images to determine the better match.

Your stamp is also irregular. I recommend weighing your sash on a scale to determine which stamp option is best for your particular application.

Comparison of the S351 and S390 balance shoes.

Great! I'm glad it's a match. I can't place an order for you here, but all of our products can be purchased directly on our site at your convenience. 

Please feel free to reach out if you had any further questions.