Lettering on coil brackets

[Athame57]

I'm in the process of trying to get a pair of brackets for the coil I will have to replace. As you can see some bum down the line lost them and replaced them with a gaggle of spacers and nuts, I can't think how that escaped my eye mind. But I've ordered a pair of left hand brackets from a well known on here breaker and he sent me this message : 'I am not sure which ones are the left but they have a combo of two letters on them so let me know'
Well as you can see in the image I've sent one of the two still on the bike have lettering on one bracket.....what should be on the other if things are universal?
By the way, it seems one of the coils has already been replaced, does anyone know which is original if either?

[Deano400]

The numbering on yours is the same as mine, that is both of mine have the same number as yours. I thought the N at the end of yours might be a clue but one of mine is F and the other K. The difference appears only to be the length of plug leads. 1 and 4 have longer leads. Looks like you need 2 and 3 the one with shorter leads.

[Athame57]

Dean...I mean the number on the brackets not the coils! ...oh, I see what you mean, the one with N on might be original, ok.

[Bryanj]

The coil on original brackets is also original

[Deano400]

Front post on 2&3 looks like it's marked BC. The rear post AC.

[Athame57]

Thanks for this, will get back to him and send the image too.

[Deano400]

Might be able to see on the pic.

[Deano400]

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[Deano400]

Sorry, can't figure out how to open in new window so you can zoom in. I will take close up pics if you need them.

[Athame57]

That's ok, thanks Deano!

[waffey]

here is a picture of mine. Looks like AD

[Athame57]

Thanks Waffy!