Hello - that might be a nice item and indeed, one might be tempted to use is straight as it is... Nevertheless, I would recommand to have a service before using such an "old" new stock item. I have just taken my (prewar-)speedo to a local expert for instruments here in germany. He showed me the inside of a similar Smith speedo. He pointed out, that it can work for a few miles, before either the mechanism inside will colide due to a loss of oil (e.g. after 50 years of storage...), or the Speedo-cable will break. The bill for repairing a damaged speedo will be much higher than have a service beforehand, as mechanical spares especially for the clock are getting rare - at least on the continent .... I was convinced by seeing the inside of the speedo - for me, it looked rather like a old watch before the electronics took over. Just my opinion and experience of having used (and broken) a "NOS-speedo" bought in Beaulieu this year... Regards from germany
