Bookbinders / Leather working Rounding Irons. (41121)

Five number steel rounding irons, the retired bookbinder these came from said he used these to round creams book edges? There are two at 1/8” two at 3/16” and one at a 1/4” they measure a little over 4” in length with a creased edge of 1.3/4” 

Price is inclusive of postage to mainland U.K.