61 Ferret scout car new variation?

[ford_a_30]

I am getting around to cataloging some of my extras so I don't sell off anything I need and came across an interesting item.
Nick's guide says the Ferret could have a small "A" cast into the inside of the base next to the ejector ring. I have one of those, code #15. I also have 2 more that would be code 15 except the base clearly has a "B" cast into it. There is nothing in the listing's about any other letter(s).
Does anyone else have one like this?

[zBret]

There was a discussion, on the "letters" of the 61a
here on the forum.
viewtopic.php?f=4&t=948

zBret

[ford_a_30]

Thank you zBret for getting me onto the right thread.

Has there been any thought as to adding these to the variation table? Perhaps Nick could get a foot note onto the page for now to at least alert other members to keep a look out for them.