The following is just a ramble, meaning nothing except asking questions that I think are interesting about this prop in general, and that maybe someone with more insight can shed some light on.
/end disclaimer/
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I have unfortunately been unable to screen-match the pendant for sale. I scoured the episode to try and match at least the decals from either side of the ebay one to a cap, but none of the other 118's are of any quality that would allow a certain match to be made.
We do know, however, that the clearest screencap of the lit 118 is not the one on sale on ebay.
Yet, what I did notice from the episode is that there are many more numbers that are seen in off and lit up mode.
There are, at a glance, 7 more that are seen off and lit - 1, 471, 2, 27, 210, 11, 3, besides the 118.
Did they produce 8 light & non-light up versions of the same numbers, their budget being restricted & all ? Those things must have cost a small fortune in those days.
If not, then why was 118 an exception and 2 were made of that ?
Or did they simply remove and replace the decals on one or two light-up versions to use in different scenes ? I did not notice more than 2 lit-up at the same time in any part of the episode. I of course stand to be corrected because I got dizzy eventually :wacko
If they had invested in 8 light-up versions, wouldn’t it have been reasonable to assume a scene would have all 8 lit-up on screen ?
If the 118 on sale cannot be matched to the screencap that shows it clearly has the 'lip / step' and is not the same one .... why should I, based on the above speculations, believe that 2 of each were made ?
So again, if not, then why was 118 an exception and 2 were made of that ?
Even if there may have been confusion about a particular scene, in the Kirk scene, similar to the Chekov scene, the numbers are different. No two 118's.
Did they all have decals on both sides ?
I cannot fathom why if that were the case.
Again, then why does the 118 on sale have them on both sides ?
Would they have made non-light up versions that could open / were hollow, like this 188 on sale ?
Wouldn't it have been cheaper to make one or two hollow light-up versions and the rest solid ?
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Questions questions
Although I would not dare to claim anything concrete about the authenticity of the prop on sale on ebay, my speculation, considering all the above, is that if the prop on ebay is genuine, it was a production / test piece.
That is the only speculation that would fit into the answers I gave myself in reply to my own questions.
..... and that is also why I collect only replicas.
At least, barring screen-matches, I am always 100% certain that they are authentic .... replicas