Marshall cab with Celestion v30's

[Pete S]

I have a Marshall cab with Celestion Vintage 30's and i'm trying to figure out how old the speakers are. There are no stickers on the magnets, but the magnets have been stamped CU20 15. The paper cones say 444. And i'm posting some pics of the chassis. Hopefully someone can date these speakers for me. Thanks

 

[fitz288]

Celestion Date Codes, Stamps & Dating Speakers - Bygone Tones
4th/6th Sept 1975?
I always get this wrong so...

 

[Pete S]

I thought Vintage 30's came out in 1986?

 

[fitz288]

I thought Vintage 30's came out in 1986?

See, I was right, I always get this wrong.
This stamp format would make your "H" stand for 1998?

 

[Anand Mahangoe]

Wow, these are very nice cabs man !!
T3903 are made in the 90’s and referred more as V30 vintage speakers….

I have them in a Friedman 4x12 cab as a Speaker Impulse and the best V30s I have heard

 

[Pete S]

Someone said the first digit is a zero, so they were made on Sept 04, 1998.

 

[fitz288]

What is that? Can someone explain this to me?

https://www.bygonetones.com/celestion-date-codes.html