There is lots of evidence from the Second Temple and post-destruction periods to show what the seven-branched Temple Menorah looked like. I gathered it here and it clearly shows that the branched of the TM were higher than they were wide (ie a curved bottom of the branch, which they rose vertically).
I've ignored the Lead Codices which David Elkington - aka Paul Elkington - claims to have illegally smuggled out of Jordan because ... well, I figured that anyone with half a brain could tell they were bad fakes, and plenty of others who know more about early Judaism and Christianity have had plenty of fun de-bunking them already.
They may have been made of recycled ancient lead, but they ain't kosher by any stretch of the imagination. First they were marketed as ancient Jewish, then they became 'important' to early Christianity (there's probably more money in the latter).
But I thought I'd make the obvious archaeological comment that the menorah on this 'codex' (from their official Facebook group) is clearly wrong:
Actually the Fake Codex menorah has branches which are wider than they are high, taking the mistake on the Arch of Titus a step further in it's development ....
Most solid, genuine ancient evidence for the Temple Menorah shows the branches as vertical, as here:
So, these are really badly researched fakes ... for more genuine images of the Temple Menorah, see my earlier post here - the "wide" menorah with branches that were semi-circles was a Byzantine creation, but I don't know of any genuine image where the branches were wider than they were high ...
UPDATE - looking at the photo used by the Daily Mail in their article about the codices, which is better, I realised it's not even the Temple Menorah with seven branches but possible one with nine branches, if you include the large ones lower down ...
Ummm ... sorry to be a killjoy, but these did not start to be used until after the destruction of the Temple by Titus in AD 70 ... and even then we're not quite sure when, as for many Jews using oil lamps was an acceptable alternative. The first certain nine-branched Hannukah Menorah is now in the Musee Cluny in Paris: it comes from either Italy or Alexandria, and dates to the AD 220s. I couldn't find an image of it online, but the publication is here and there are very few others for a long time after (and many, particularly Sephardi Jews, continued to use oil lamps for Hanukkah rather than candlesticks).
Oh dear, now that I've bothered to look at the Lead Codices smuggled out of Jordan, they are turning into laugh out laud bad fakes ...This one is a 7-branched but again very wide in relation to the height of the branches - source:
Now I'm feeling a bit guilty, as mocking the fakes is as easy as stealing sweeties off a child ... but that's not going to stop me adding this image from a Lead Codex which was for sale on eBay, and which David Meadows kindly pointed us to ... (alas, too late to snap it up for a bargain $13,000). It too has a seven branched Temple Menorah which looks identical to the one in the photo immeditately above (same mould?):