Each box contains 2 or 3 autograph cards. There are 23 different actor signatures (there were 18 in set 1). Some cards are the original set 1 design (with black bases rather than orange); presumably these were held back from the first series. Not all the cards were available when the set was issued in July 2018; some were released later.
The copyright dates are 2016 (set 1 style), 2017 (Blair, Boyd, Culver, Glover, Leon) or 2018 (the rest). The base cards have a 2018 date.
There are several types of autograph card:
Robert Atiko - 1 card, RA1. It is the same photo as RA1 in series 1
Barbara Bain - 3 cards, plus 6 Andy Fry sketch cards. The card code BB is the same as that for Brian Blessed. Card BB3 is exclusive to the triple case (1/50). BB1 and BB2 appeared in the 2018 Yearset
Isla Blair - 2 cards, with the wrong code IS1 and IS2 (instead of IB); IS1 an exclusive with 3 box purchase (50). Cards dated 2017.
Brian Blessed - 1 card (series 1 style, dated 2016)
Roy Boyd - 2 cards (RB1 is the same as RB1 in series 1). Cards dated 2017.
Bernard Cribbins - 2 cards (series 1 style, dated 2016) with identical front picture- BC1 ("as Captain Michael") and BC2 ("as the voice of Brian the Robot"). In set 1, BC1 and BC2 had the same reverse captions, but the front picture was of Captain Michael for both.
Michael Culver - MC1, MC2, MC3, 3 cards. Cards dated 2017.
Julian Glover - 2 cards; JB1 an exclusive with 3 box purchase. Cards dated 2017.
Prentis Hancock - 2 cards
Laraine Humphrys - LH1, 1 card
Susan Jameson - 2 cards (both photos identical to SJ1 and SJ2 in series 1 with different cropping). SJ1 is an exclusive case topper.
Brian Johnson - 1 card
Valerie Leon - 1 card. Card dated 2017.
Zienia Merton - 1 card (series 1 style, dated 2016)
Anton Phillips - 2 cards
Tony Osoba - TO1, 1 card
Christopher Penfold - 1 card
Dave Prowse - 2 cards, DP1 and DP2. 40 cards. One of either DP1 or DP2 is only available with triple-case.
Shane Rimmer - 2 cards, SR1 and SR2, each in two variants ("as Kelly in the episode Space Brain" and "as Kelly").
David Robb - 1 card, DR1. Unusually, a black and white publicity photo.
Catherine Schell - 3 cards
Nick Tate - 3 cards (all series 1 style), NT3, NT4 and NT5. All have a 2016 date. NT5 was released in the 2017 year-pack.
Norma West - 1 card. The image is not Norma West.
There are 2 double-signature cards, which are the same size as the other cards. Each is one of 50. Both these are only available with triple-case purchases. One is Nick Tate and Shane Rimmer, the other is Isla Blair and Julian Glover.
NTSR1- Nick Tate and Shane Rimmer. Originally shown in the series 1 promotional images, it appears again in a series 2 image.
IBJL1 - Isla Blair and Julian Glover. Another odd code- while IB is Isla Blair (unlike her individual cards, IS1 and IS2), Julian Glover does not have the initials "JL".
Not original autographs, these are printed signatures.
Barry Morse BMB1 is an exclusive with the binder (limited to 199)
MLB1 (Martin Landau) is an exclusive case topper (a case is 10 boxes, each of 24 packs)
These were not signed for Unstoppable, but at old events (some are evidently cut from signed photos). Unstoppable have cut the signatures into their own cards. There may be very few of these cards- with the exception of Barry Morse, there are apparently only between 1 and 3 of each. The Martin Landau and Barbara Bain one is a rare combination and is probably unique. Some cards are oversized (5 x 3.5 inches/ 13 x 9 cm)
Contents copyright Martin Willey. Thanks to Patrick Zimmerman.