……to Brian’s 67-9313 Speedy Restoration page 🙂  They are numbers 18 and 19.

It’s cool to see the population of ‘Speedy’ models passing through Brian’s hands. Of course service and repair of these fine 8110a calibres is not cheap, but with the increasing value of these pieces – and perhaps particularly the 67-9313 – as reflected on auction sites, my view is that it is a sound investment. One of the Speedy’s Brian serviced recently sold for $1200, and a search of eBay shows that far from perfect ones sell for decent money. The added value of a master watchmaker’s service is considerable, as well of course as getting the peace of mind that your watch has been properly cleaned and lubricated.