Could you help me to check a Speed master Marui serial number

Hello i'm looking to buy Speedmaster panda marui but I worry about is it all original marui not a modification dial? But I don't know where can i check a Omega serial number data base

Could you help me to check a serial number of it
Serial number is: 58403890

I'm not sure about calibre number and ref. on the case back because don't have a picture from seller
Is it possible to check by serial number only?

thank you and looking forward to hearing from you.

Best Regards

WM.