I do not believe a Mobile UHQR of "Days" was released.
I have found these 8 UHQRs made with a reported total of 5000 pressing each.
UHQR-1-005 - Crime of the Century - Supertramp
UHQR-1-017 - The Dark Side of the Moon - Pink Floyd
UHQR-1-025 - Finger Paintings - Earl Klugh
UHQR-1-035 - Tea for the Tillerman - Cat Stevens
UHQR-1-084 - I, Robot - The Alan Parsons Project
UHQR-1-100 - Sgt. Pepper's Lonely Hearts Club Band - The Beatles
UHQR-1-507 - Feste Romane - Maazel, Cleveland Symphony Orchestra
UHQR-1-510 - Holst: The Planets - Sir Georg Solti, London Philharmonic Orchestra
I have found these 8 UHQRs made with a reported total of 5000 pressing each.
UHQR-1-005 - Crime of the Century - Supertramp
UHQR-1-017 - The Dark Side of the Moon - Pink Floyd
UHQR-1-025 - Finger Paintings - Earl Klugh
UHQR-1-035 - Tea for the Tillerman - Cat Stevens
UHQR-1-084 - I, Robot - The Alan Parsons Project
UHQR-1-100 - Sgt. Pepper's Lonely Hearts Club Band - The Beatles
UHQR-1-507 - Feste Romane - Maazel, Cleveland Symphony Orchestra
UHQR-1-510 - Holst: The Planets - Sir Georg Solti, London Philharmonic Orchestra