Bury St Edmunds St Mary - Baptism 10 Sep 1784

[Aulus]

If anyone has the opportunity to check something for me in the baptisms register of St Mary's, Bury St Edmunds, I would be most grateful.

Familysearch has the baptism of apparently two twins, Edward Guest and Henry Guest, sons of Ralph Guest and Sarah Prick on 10 Sep 1784.

But Familysearch has two different birthdates for them: 11 Dec 1780 for Edward and 11 Dec 1783 for Henry. 

I assume that this is just a transcription error.  If they are indeed each other's twin, the 1783 date is clearly the correct one as there is another son called Henry who is buried at St Mary's in Bury 11 Aug 1782, but I would be grateful for confirmation as to what the register actually says.

Many thanks