birth certificate numbers

[Robledodr]

At the top left of my birth certificate it has the following numbers:
A handwritten letter
A set of three handwritten numbers
2 printer numbers, a dash, then 6 printed numbers

At the top right, it has a handwritten letter with 2 handwritten numbers

What do these handwritten parts mean?

You are a clone.

not amused
if you don't know, just say so

In which country was the certificate issued?

I would think it will be that the certificates will have the pre printed items to represent the registration centre and the session and then the registrar will add the handwritten for each registered birth so the 3 numbers might be say the 153rd registration for that session if that makes sense? The letter might represent something like the sub office or to identify the registrar?

Thanks for your responses!!

Was issued in California, USA.

Google says the system in use since 1948 (Just my luck, I was born in 1947) is as follows:
on the left, an 11 digit number: 3 numbers to indicate a birth area code, a 2 digit year of registration (almost always the birth year), then a 6 digit serial registration number (assigned sequentially to each birth as its filed).

I've got the 47 for my birth year.
I understand the part about the 6 digit serial registration number (assigned sequentially to each birth as its filed)

The problem for me is that the beginning, where it's supposed to contain 3 numbers to indicate a birth area code. I have a handwritten letter and 3 handwrritten numbers.

Then, on the far right of the certificate, after it lists mother's maiden name, there's the same handwritten letter, followed by 3 numbers that are different than the ones on the left side.

I thought what @cabbageking said was funny. No need to tell her off.

Tbh, you're more likely to get knowledgeable replies to an enquiry about historic US birth certificate numbering formats on a dedicated genealogy site like RootsChat. MN has an eclectic range of contributors but this is quite niche imo.

@Robledodr

not amused if you don't know, just say so

I don’t know.

Agree, I think you will get more information on a US site. I am used to looking at Scottish records where a birth will be recorded and listed in the index along the lines of 234/9864 - the 234 is the district number, the 9864 being the sequential numbering of the births of that year.

Doesn't really MEAN anything though, as the birth certificate will also state the name of the registration district. I suppose if you have someone born in Nov/Dec and they're only the 20th birth that year you can surmise it's a very rural district with a low birth rate. But the numbers are really only useful for ordering copy certs.

I don't know.

Thank you to everyone.
I'll check into what you've said.