Interesting piece. The serial number would indicate a screw back award, but this looks to be a Type 3, option 7 if I'm not mistaken (there are several variations that look similar) http://mondvor.narod.ru/ORbnLab2.htm
My guess is a replacement/duplicate award? the serial number engraving looks good to my eyes, but why add the '0's before the number 987?
I can't comment on the award booklet, those are a minefield to me.
I look forward to hearing other opinions on this!