[KillerBeeFan]

I checked my 1994 Topps Biggio's (Card # 305). Don't have many but here's what I found.

1994 Topps - 5 cards - None have a letter in the copyright section
1994 Topps Gold - 1 card - Does not have a letter in the copyright section
1994 Topps Spanish - 1 card - Has the letter 'A' in the middle of the copyright section.

Very small sample size but no card found with/without the letter.

Phil