An experience of last 15 years judge the authenticity

I bought a few coins from Sadigh gallery and completely satisfied with the quality. Being a collector for last 15 years I can judge the authenticity of such materials and I am quiet assured of having such authentic coins from this gallery. I am not a new collector and know how to judge the authenticity of such collections.  I have done a lot of research on such collection before starting this and I can assure that this gallery has nothing to do with such fraud items. Even there are some facts that can really make a huge difference of an authentic coin and a bogus coin. With this collection of this gallery the authenticity is visible in a very clear way.