In the "New Yer's Guiftes giuen to The Quene's Maiestie" we find
two handkerchives of Hollande, wroughte with blacke worke, and edged with a smale bone lace of golde and siluer; and an asse of golde enamuled.
I can imagine a piece of jewelry shaped as a donkey but this seems rather odd. The other kind of ass is not very much suitable as a royal gift, even when of golde enamuled. Is there some other meaning? I cannot find any.
Edit: this can be found in The Progresses and Public Processions of Queen Elizabeth