(Fieldless) An abacus sable. Wolfgang Rotkopf (3/1995 West)
(Fieldless) An ermine passant counter-ermine maintaining an abacus sable. Aleyne Edwinson (5/2004 AnTi)
Gules, an abacus Or and a chief embattled argent. Vincent the Calculator (4/1993 Midd)
Per pale gules and Or, an abacus counterchanged. Reinhardt Breitenbach (8/2006 East)
Per pall Or, ermined azure, sable and vert, an abacus argent. Carwyn O'Hirwen (2/1990 Midd)
Per saltire purpure and checky argent and purpure, in chief three bezants two and one and in base an abacus Or. Heather of Arn Hold (9/2000 Arte)
Sable, a bend sinister bretessed Or between an abacus and a lit skyrocket bendwise argent. Iames of Mann (7/2004 Outl)
Sable, an abacus bendwise Or within a bordure argent. Abrahe çaragoça (9/2006 AnTi)