Miscellaneous, Plating Trial, c. 1980, in conjunction with Texas Instruments, in steel with brass plating, crowned arms dividing Tower Mint logo and a rose, royal mint on banner below, rev. Texas Instruments logo above 2, all within wreath, edge plain, 23mm, 4.22g/12h (cf. Davisson Mailbid Sale 15, 316 [cupro-nickel]). Obverse very fine, reverse extremely fine, very rare; only one other seen by the cataloguer in commerce (£50-80)

This lot was sold as part of a special collection, The Joanna Tansley Collection of Patterns, Proofs and Coining Trials.

View
Collection

Texas Instruments, Dallas, founded 1930. These trials are believed to have been struck in the late 1970s and early 1980s; the numbers on the reverses denote different plating types