Help with reading a serial number

[Vic30906]

I can't determine my H157 serial number can anyone make this out? TIA.

Edited March 16 by Vic30906

[TalismanRich]

Pull the control cover and check there.   It should be written there.    The numbers are 00402.   It's hard to tell if the letter is a Q or not.

There was a point where their stamp was getting pretty well worn.   It made some of the serial number unreadable.    For a bit, they wrote them out by hand, then they got a new stamp.   They had to do that when they got to AA serials anyway.  

[skydog52]

Factory 2nd also.

Looks like a U or a V to me.

[TalismanRich]

I missed the 2 above the serial #.    Good catch.

Edited March 17 by TalismanRich