This Nimcha (wedding?) has just finished on eBay.....e-mailed seller...the blade was 4mm and very similar to the one I own..but has an less acute curve..tried a late bid ..but missed out. It seems there are more Nimcha 'daggers' with useable blades
http://cgi.ebay.co.uk/ws/eBayISAPI.d...MEWA%3AIT&rd=1