Alex:
Can you please explain what you mean by this? Pressure from buyers (wanting to buy watches) will move the price up; pressure from sellers (trying to unload their watches) will move the price down. So do you believe that the re-issue of the Silverstone will be a positive influence on the price of the vintage ones (and drive prices up) or a negative influence (and drive prices down)?
I'm not sure that we have ever seen a drop in prices for the vintage Silverstones; they seem to have been very stable, over the past few years, with most of the moves being to higher prices. I would be surprised if the re-issue of the Silverstone -- with the related publicity and promotion of the Silverstone name -- would cause the prices of the vintage ones to come down.
Jeff