Each is very well made portrait button c. 1960-1961 but without any maker name. Washington has small 1/16" raised dot of celluloid at upper right and Lincoln has 3/8" cello split on the reverse along the collet with celluloid making a small bulge on the left side when viewed from the front. These are the only defects we see on what is an exceptionally clean and glossy set totally free of any age stain. We believe this is the same identical set we offered about a decade ago and it is the only example of the set we are aware of.