gray chip ($1 ncv} $1 plus first class US forever stamp
red chip ($5ncv) " (both red & grey only 1 stamp)
Blue chip ($10ncv) " ( blue, red, grey only 2 stamps)
green chip ($25ncv) $1.50 plus forever stamp
black chip ($100ncv) $1.50 "
complete set of 5 chips $5.00 plus $2.00 postage== $7.00