Illuminated Manuscripts from the Gothic era are well represented in 16 different lots, mostly 15th century including on vellum, a page from the book of hours, a 15th century Psalter, and a gorgeous diploma in Latin from 1618.
A direct link to each lot is provided below and seldom does such an impressive run of illuminated manuscripts come up for auction with no reserve.  Each item was hand-selected by Otto Fisher as part of his significant collection and none of these have been seen on the market for over 60 years.

Lot 6 : 1618 Diploma in Latin https://evstamps.hibid.com/lot/101250433/1618-diploma-in-latin/?q=&ref=catalog

Lot 38 : 15th Century Psalter English https://evstamps.hibid.com/lot/101250465/15th-century-psalter-england/?q=&ref=catalog

Lot 111 : 14th century Breviary Italy https://evstamps.hibid.com/lot/101250538/14th-century-breviary-manuscript-leaf-italy/?q=&ref=catalog

Lot 112 : 15th century Illuminated Manuscript https://evstamps.hibid.com/lot/101250539/15th-century-illuminated-manuscript-page/?q=&ref=catalog

Lot 113 : 15th century Illuminated Manuscript https://evstamps.hibid.com/lot/101250540/15th-century-illuminated-manuscript-page/?q=&ref=catalog

Lot 114 : 15th century Illuminated Manuscript https://evstamps.hibid.com/lot/101250541/15th-century-illuminated-manuscript-page/?q=&ref=catalog

Lot 115 : 15th century Illuminated Manuscript https://evstamps.hibid.com/lot/101250542/15th-century-illuminated-manuscript-page/?q=&ref=catalog

Lot 116 : 15th century Illuminated Manuscript https://evstamps.hibid.com/lot/101250543/15th-century-illuminated-manuscript-page/?q=&ref=catalog

Lot 117 : 15th century Illuminated Manuscript https://evstamps.hibid.com/lot/101250544/15th-century-illuminated-manuscript-page/?q=&ref=catalog

Lot 118 : 15th century Illuminated Manuscript https://evstamps.hibid.com/lot/101250545/15th-century-illuminated-manuscript-page/?q=&ref=catalog

Lot 119 : 15th century Illuminated Manuscript Book of Hours https://evstamps.hibid.com/lot/101250546/15th-century-illuminated-page-from-book-of-hours/?q=&ref=catalog

Lot 175 : 15th century Illuminated Manuscript on Vellum https://evstamps.hibid.com/lot/101250602/15th-century-illuminated-text-on-vellum/?q=&ref=catalog

Lot 176 : 15th century Illuminated Manuscript on Vellum https://evstamps.hibid.com/lot/101250603/15th-century-illuminated-text-on-vellum/?q=&ref=catalog

Lot 177 : 15th century Illuminated Manuscript on Vellum https://evstamps.hibid.com/lot/101250604/15th-century-illuminated-text-on-vellum/?q=&ref=catalog

Lot 178 : 15th century Illuminated Manuscript on Vellum https://evstamps.hibid.com/lot/101250605/15th-century-illuminated-text-on-vellum/?q=&ref=catalog

Lot 179 : 15th century Illuminated Manuscript on Vellum https://evstamps.hibid.com/lot/101250606/15th-century-illuminated-text-on-vellum/?q=&ref=catalog