At the top, it bore the printed stamp of Messrs. 
( ( At ( the top ) ) ( , ( it ( bore ( ( the ( printed stamp ) ) ( of Messrs. ) ) ) ) ) )
(ROOT (S (PP (IN At) (NP (DT the) (NN top))) (, ,) (NP (PRP it)) (VP (VBD bore) (NP (NP (DT the) (VBN printed) (NN stamp)) (PP (IN of) (NP (NNP Messrs.)))))))
It has a Messrs stamp.
( It ( ( has ( a ( Messrs stamp ) ) ) . ) )
(ROOT (S (NP (PRP It)) (VP (VBZ has) (NP (DT a) (NNP Messrs) (NN stamp))) (. .)))