Led Zep III Promo

["Stephen M Ives" <unclepepper@xxxxxxxx>]

I have located a copy of Led Zeppelin III, on vinyl, a white label
Promotional Copy, with the spinning wheel cover.  The vinyl is in fair
condition, though the label is in very good condition, the cover is good,
though the spinning wheel has seperated from the rivet. Can anyone tell me
the approx. value of this item, before I purchase. Thanks.