What is the production serial number of Doraemon?

Alright, I'll help you with this question! This is a fun little detail that Doraemon fans love to discuss.

Doraemon's Production Serial Number is MS-903

That's right, it's MS-903. This number is essentially Doraemon's "ID number" from the factory.

What does this serial number mean?

The number actually has some interesting meaning when broken down:

MS: This stands for "Matsushiba Robot Factory". Interestingly, this name pays homage to the real-world Japanese electronics giant "Matsushita Electric" (now Panasonic). Author Fujiko F. Fujio loved incorporating these kinds of real-world references into his work.
903: This is Doraemon's specific number within the "Cat-type Robot" model line. So his full designation should be "Cat-type Robot MS-903".

A Bit of Fun Background

Doraemon was manufactured at the Matsushiba Factory in the 22nd century, alongside a group of identical cat-type robots. He was originally yellow and had pointy ears.

However, during the pre-shipment quality inspection, he was deemed a "defective" robot due to a loose screw and relegated to the discount section. Later, his ears were bitten off by a mouse. He cried so hard in sadness that his yellow paint washed off, revealing the blue color we know today.

So, this MS-903 serial number also bears witness to his journey from the factory floor to becoming the unique Doraemon we all cherish.

By the way: His sister Dorami's serial number

Doraemon's sister – the higher-performance Dorami – also has her own serial number: MTR-2112.

The number 2112 is actually Doraemon's "birth year," the year he was created: 2112. That's a pretty neat detail too!

Hope this answer helps! These little details are part of the fun of collecting and appreciating the Doraemon series.