question about proximity of hp41c/cv serial numbers

[rprosperi]

Doing simple math, and assuming:

-45000 units made that week (likely more)
-8-hour day
-5 day week

45000 / 5 / 8 => 1125 / hour

So, less than an hour apart.

The assumptions are likely low, running > 8 hours per day and possibly more than 5 days / week, so you can safely conclude between 30-60 minutes.

But it has been reported that the "week" component of the SN, at least in some places, were not truly a week long, but rather reflect what week that batch began, so it's impossible to know for sure. In any case, getting siblings that close together, from almost certainly very different paths through life, is unexpected.