Hi Annie I believe there have been a number of innovative cufflinks designs since there invention, it's a subject in itself!
Marking "Patent Pending" would serve to notify potential infringers who might copy design, that they may be liable for damages, once a patent is issued.
Cufflinks are designed only for use with shirts which have buttonholes on both sides but no buttons. These may be either single or double-length ("French") cuffs, and may be worn either "kissing," with the ends pinched together, or "barrel-style," with one end overlapping the other. The "barrel-style" was popularized by a famous 19th century entertainer and clown, Dan Rice; however, "kissing" cuffs are usually preferred.
Annie I wish I could help more, but with the absence of a photo, I don't know where to begin, and what is meant by a "5 pointed decor" -
STARS in general, with different numbers of points have been a popular mark throughout the history of jewelry...
Your local jeweler can test to determine gold content.
