In light of the recent comments on ICON I decided to post these Hemi 21's pictured are left to right.......Hemi blue "non narrow dome" sharp drip, Hemi blue "narrow dome" sharp drip, and finally Hemi blue round drip. The left and middle units here are typically confused as being of the same shape. I've seen this mistake at shows including Springfield. Noting "narrow dome" in the guide would help in determining what you the collector has especially newbies. Yes the embossing is different between the left and middle in the guide but again leaves a void when looking at the reference picture and dimensions These are a fun CD variant to collect when trying to find the long drip versions without damage.