The Bechtler $2.5 K-7 variety features GOLD above the denomination, which is centered in the obverse field above 20.C. The beads around the border are fine, as opposed to coarse, distinguishing it from the K-6 variety. No weight is listed.
(1831-34) C. Bechtler $2.50 K-5, Fine Beads, No 75G. PCGS #10085