Progress Balance Wheel & Hairspring – EB 8¾‴ Cal. 8350 / 8361

Progress Balance Wheel & Hairspring – EB 8¾‴ Cal. 8350 / 8361

Description:
A vintage Progress balance wheel with hairspring, supplied in its original branded yellow Progress container. Designed for EB (Ébauches SA) calibres 8350 and 8361, this part is ideal for repair or restoration work.

Key Details:

• Brand: Progress

• Type: Balance Wheel & Hairspring

• Calibre: EB 8350 / 8361

• Size: 8¾‴

• Original packaging included

Condition:

• New old stock (NOS) part

• In original Progress container

• Packaging shows age-related wear

Summary:
A genuine Progress Swiss spare part, perfect for watchmakers, collectors, or those restoring vintage EB calibres 8350 / 8361.

Postage & Shipping:
As usual, this item will be packaged carefully and dispatched with tracking. International shipping is available through the eBay Global Shipping Programme (GSP).