13 GCA § 3510
Evidence of Dishonor and Notice of Dishonor
View official PDF ↗The following are admissible as evidence and create a presumption of dishonor and of any notice of dishonor therein shown: COL120106 DIV. 3 COMMERCIAL PAPER
(a)A document regular in form as provided in the preceding section which purports to be a protest;
(b)The purported stamp or writing of the drawee, payor bank or presenting bank on the instrument or accompanying it stating that acceptance or payment has been refused for reasons consistent with dishonor;
(c)Any book or record of the drawee, payor bank, or any collecting bank kept in the usual course of business which shows dishonor, even though there is no evidence of who made the entry.
Reconstructed from the Guam Code Annotated. For the authoritative version, see the official PDF.