Swiss ETA parts
The 3.15mm cannon pinion # 00240.6497.03 - 134017
The 2.15mm matching hour wheel ~ 00250.6497.03 - 134014
Do make sure that you get the parts ending .03. The same part ending 02 is not tall enough to allow for the thickness of the dial in these watches. While you may only need the cannon pinion (it's the one that appears in the centre of the min hand) getting the corresponding hour wheel will ensure that you have the 1mm for the min hand to mount.
These should be readily available from any material house, e.g. Cousins UK, Borel, Ofrei etc. Do not be fooled into paying the ridiculous prices on eBay. These are not expensive parts.