Was over at a buddies shop recently (semi retired and his half of the
shop is now in his back yard) having some work done on my bat house
mold. Noticed the number on the head of his newer Bridgeport and asked
him "Is this a model or serial number?" "I don't know" was his answer.
The other much older Bridge port had a random six digit number starting
with '2' so I assumed these were serial numbers.

Once I got home a quick Google search confirmed my guess as well as some
discussion trying to establish a correlation between the machine serial
number and the heads separate serial number.

Long story short, my friend has J head number 300,000.
--
William