I'm new to FPN (and fountain pens in general), but joined just to respond to this post
I saw the listing for this pen on Ebay AU and was also attracted to the amber body, but wasn't willing to pay the Buy It Now price for it. When I saw Engeika list an Ebay auction for the Lantern UEF, I jumped on it and long story short, the pen arrived a few days ago.
It is gorgeous in person. It's my first Platinum #3776 and so far I'm loving it! The UEF nib is really smooth and not scratchy at all. I'm really glad I decided to bid for the UEF instead of the EF as my Pilot VP EF nib still writes a hair finer than the UEF.
The team at Engeika was great too. I had a few queries on this pen and others, and their responses were always very pleasant and helpful. Prior to this, I'd seen other FPN users highly recommend Engeika, and can see why! Hope this helps!