dessert trenchers in New York

O happy happy day! The Metropolitan Museum of Art has finally added their trenchers to their on-line images! It turns out they have at least two sets, if you go to the collections database search and enter "trencher" (singular, not plural) you will get some lovely color pictures! 
They have a set of rectangular trenchers that appear to the Bird set (described in the Proceedings of the Society of Antiquaries of London. June 28, 1888. Group 2, pp 203-6).   
The second set of round trenchers is either the same as, or a sister to, the set shown on Plate 24 in Owen Evan-Thomas's Domestic Utensils of Wood, XVIth to XIXth Century: A Short History of Wooden Articles in Domestic Use from the Sixteenth to the Middle of the Nineteenth Century (London, 1932).