27C Balance
Hello,
It looks like you have either our S351-28, with a 15-002 bottom attachment, or S390-28, with a 15-001 bottom attachment. Take a look at the image below to determine which balance you'll need. You'll also need a 2730 spring strength option for your replacement balances based on your original 37C stamp.
As for your top sash guide, we'd need to see clear, close-up photos of an intact guide to narrow down your options. Thank you!
We are not able to process orders through this thread but if you're sure that the specifications of the 18-038 top sash guide match your part, they can be purchased with your S390-28 balances directly on our website. You'll also be given multiple shipping options to choose from at checkout, including expedited delivery. You're also welcome to give our customer service team a call at (888) 991-1929 to order over the phone.
