Did you look under the Promos set in the 1995 Score football listing here on the database? The set might be titled "Promos", but the scans that are in there have Promotional on the back just like all the ones you posted.
As for finding them in a price guide, the following can be seen on the beckett.com website:
http://www.beckett.com/football/1995/score-promos/
"These cards were issued to preview the 1995 Score series. Four cards were packaged together in a cello wrapper. The Promos can easily be distinguished from their regular issue counterparts by the disclaimer "PROMO" stamped in black across their fronts or the word "Promotional" across the cardbacks."
