A lovely set, and how thrilling to have the date of issue to the very day! It is actually printed on the back as "773. 11/6/27, but do let me know if this should be the 6th of November and I will amend.
The cards are unnumbered, and there is a list in both versions of our Trade Indexes, but it is hard to scan as neither book will lay flat enough. But it will eventually appear as I believe you can get anything to happen if you keep working away at it for enough time.
They are indeed cut-outs, and if you look closely around the outline between the blue and the figure you may glimpse the perforations with which you could push the figure forwards and bend back the blue.
They were originally reported as measuring 112 x 36 m/m in our original British Trade Index volume 1 of 1962, but later altered to 102 x 36 m/m in British Trade Index volume 3.
By the way there are three cards showing sheep in this series, but this is actually a Shetland Shepherd and his collie, which closes our tribute to Shetland Wool week very suitably. And some time I will upload the back below here so it is readable the right way up....