What conclusions would you draw from a 992B with a 950B serial number?

and...what evidence would you accept that this pairing is "legitimate"?

Unless it was done at production it is probably someones fixen.
I have run into a lot of Hamilton's that are not as they are purported to be. I have two single rollers that are supposed to be double. I have 4 974 Hamilton's that do not have interchangeable parts.Some have a two pin balance bridge and some have a three pin. (Line up pins)

Kenneth, It would be good to know the serial number, but have you looked at this VERY interesting topic that Lindell put up for us?

Featured Topic: HAMILTON "4C PREFIX" AND "S PREFIX" 992B POST-PRODUCTION DATABASES

I don't know if this is what you are talking about, but very interesting, and informative, reading.

Regards,
Larry

Ken,

In order for a pairing to be considered legitimate I’d want the serial numbers to be consistent with the ones in the post production database Larry refers to. In addition a careful comparison of the parts to the ones that would have been used at that time would be required.

Have a good day,

RR

Thanks to all who replied. I've read Lindell's excellent posts - but don't always remember it. Looking at it again, I see that the serial number in question falls well within the range of 950B numbers already known to be used for "post-production 992B's). I don't have the access, or skills, or even good enough photos, to judge individual parts - For a newbie such as myself it was a minor triumph to recognize the implications of the mixed major parts in the first place. So...I suppose I'll put this one in the "not proven to be bogus, yet" category until/unless I can get better information.

Thanks again - spot on information, as always.

I don't own it - it was offered for auction...and then pulled for "an error in the listing".