Might help if you list the original parts that you have for the bike. If of same calibre as the badged Cinelli stem (love those) it will help the sale perhaps more than the more modern Shimano components.
I'm not an expert, but this might give you an indication of how much the stem alone is worth http://www.ebay.co.uk/sch/i.html?_nkw=cinelli+badged+stem&_in_kw=1&_ex_kw=&_sacat=0&LH_Sold=1&_udlo=&_udhi=&_samilow=&_samihi=&_sadis=15&_stpos=&_sargn=-1%26saslc%3D1&_salic=3&_sop=12&_dmd=1&_ipg=50&LH_Complete=1
@Ste_S started
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Might help if you list the original parts that you have for the bike. If of same calibre as the badged Cinelli stem (love those) it will help the sale perhaps more than the more modern Shimano components.
I'm not an expert, but this might give you an indication of how much the stem alone is worth
http://www.ebay.co.uk/sch/i.html?_nkw=cinelli+badged+stem&_in_kw=1&_ex_kw=&_sacat=0&LH_Sold=1&_udlo=&_udhi=&_samilow=&_samihi=&_sadis=15&_stpos=&_sargn=-1%26saslc%3D1&_salic=3&_sop=12&_dmd=1&_ipg=50&LH_Complete=1