And along came Probus.
Probus build on the reformed coinage introduced by Aurelian and moved on with it. He introduced a wide range of bust types, some of which are very rare and combined these with an equally wide range of reverses across the various mints to push out his political messages to the masses.
Many of the coins carry a military / martial theme others extol the virtues of the emperor or other events.
Obv:- IMP C M AVR PROBVS AVG, Radiate, cuirassed bust right.
Rev:- VIRTVS PROBI AVG, Mars walking right, holding spear and trophy.
Mint - Siscia (_ | P / XXI) Emission 7 Officina 1. A.D. 280
Reference:- RIC 811 Bust type F. Alföldi type 96, n° 85

Obv:- IMP PROBVS P F AVG, Radiate, draped and cuirassed bust right.
Rev:- CONCORDIA MILIT, Emperor standing right, clasping hand of Concordia.
Minted in Siscia (XXIQ in exe) Emission 4, Officina 4. A.D. 278
Reference:- RIC 666 Bust type C. Alföldi type 23, n° 49

Obv:- IMP C M AVR PROBVS P AVG, Radiate, helmeted, cuirassed bust left, holding spear and shield
Rev:- ADVENTVS AVG, Emperor riding left, right hand raised, left holding sceptre
Minted in Siscia (XXIS in exe) Emission 5, Officina 2. A.D. 278
Reference:- RIC 629 Bust type G

Obv:- IMP C M AVR PROBVS P F AVG, Radiate bust left in imperial mantle, holding sceptre surmounted by eagle
Rev:- SOLI INVICTO, Sol in spread quadriga, holding globe
Minted in Siscia (XXIVI in exe) Emission 4, Officina 6. A.D. 277
Reference:- RIC 776 Bust type H

Obv:- IMP C M AVR PROBVS AVG, Radiate, cuirassed bust right
Rev:- VIRTVS PROBI AVG, Emperor galloping right, spearing enemy whose shield lies beneath horse
Minted in Serdica (KA•A• in exe) Emission 4 Officina 1. 277 A.D.
Reference:- RIC 878 var. Bust type F (RIC does not list this bust type for this entry)
A nice bust but from slightly worn reverse dies.

Obv:- IMP C M AVR PROBVS AVG, Radiate, cuirassed bust left in elaborate cuirass decorated with Medusa medallion & holding Vitoriola (Victory on globe, facing left, holding wreath) in right hand, palm up
Rev:- VIRTVS AVG, Soldier standing left, holding Victory and spear and leaning on shield
Minted in Ticinum(QXXT) Emission 2 Officina 4. A.D. 276
Reference:- Cohen unlisted. RIC 435 var. (This bust type not listed in RIC or Cohen)
Die match is illustrated in Bastien's Buste Monetaire... pl. 126 number 11
