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<p>[QUOTE=&quot;Lecollectionneur, post: 441785, member: 8569&quot;]It seems that you don&#039;t well understand my bad english, what I say is if you can find anything made with metal which has the characteristics of an industrial product, it cannot be made before certain dates which are known for each type of profile, if you find on a clock big dimensions perfectly laminated plates they cannot be made before 1770 for example, if you find something of iron/steel without a refinished surface which has metric or english exact dimensions, it cannot be made before 1860-70 too(technology simply doen&#039;t exist before), but as I have not this movement in hand I give no information about it but the manner to analyze metal to detect period, false or repaired parts.</p><p><br /></p><p>A contrario makers of anything living in isolated parts of countries can use techniques a century later than they are produced in big centers and it&#039;s always something to consider if you have a doubt, as the use of old measures used later than official are normalized by governments.</p><p><br /></p><p>For the weight I try to explain exactly the reverse you understood, the best way to preserve your mechanism is not to begin with heavy but with lightest as possible to make function.</p><p>More your mechanism was bad maintained heaviest are the weights needed too.</p><p><br /></p><p>We had a good discussion about that together with the workshop from <a href="http://www.chaux-de-fonds.ch/services/musee-international-dhorlogerie" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.chaux-de-fonds.ch/services/musee-international-dhorlogerie" rel="nofollow">La-Chaux-de-fonds museum,</a> when a revised movement is made we often have to change the &quot;motor&quot; when it&#039;s a spring or the weights to guarantee the preservation for the future of the mechanism when it has to be daily functional because a lot of bad workers use more power to compensate bad repairs, original parts have to be conserved with the time keeper/anything when they are totally original as we made with broken parts.</p><p>A lot of things changed in the spirit of conservation, for example, <a href="http://www.clockmakersandrepairs.co.uk/" target="_blank" class="externalLink ProxyLink" data-proxy-href="http://www.clockmakersandrepairs.co.uk/" rel="nofollow">if you look on this link</a>, the polishing of all parts is now considered as a destruction by authorities in conservation because it was never the original finish when made, but a lot are made as that each day and learned certainly now in workshops.[/QUOTE]</p><p><br /></p>

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