Antoninianus - Probus Draped, right; ADVENTVS PROBI AVG

The original RIC text lists RIC 161 as minted by the 4th (RΔ, R✶Δ), the 6th (R✶ς) and 7th (R✶Z) officina and mentions 5 bust types (bust types according to Pierre Bastiens grouping of bust types; see illustrated: probvs.net). There are two know (*) variants:

1. Radiate, cuirassed, right (B bust, Guillemain (*) #83 (R), #215 (RΔ), #271 (R✶Δ), #298 & #307 (R✶Z), example: probuscoins #4470, Numista #294702);
2. Radiate, cuirassed, right, with spear (F9 bust, Guillemain #78 (R), #126 (RΓ), #142 (RΔ), #163 (Rς), example: probuscoins #2344, Numista #414305);
3. Helmeted, radiate, cuirassed, left, with spear and shield (E1 bust; no example on probuscoins, Numista #293381);
4. Radiate, wearing imperial mantle, left, holding sceptre surmounted by eagle in right hand (bust H2, Guillemain #161 (RЄ), #294 (R✶ς), no example on probuscoins, Numista #293382);
5. Radiate, cuirassed, left, hand holding sword resting on left arm (I11 bust, Guillemain -, example: probuscoins #3324 , Numista #293383);
6. [var] Draped, right (A bust, Guillemain #75 (R), #100 (-), #128 (RΓ), #145 (RΔ), #165 (Rς), #179 (RZ), example: probuscoins #2356, Numista #414306);
7. [var] Radiate, cuirassed, left, holding spear (F5 bust, Guillemain #91 (R), example: probuscoins #4589, not in Numista).

(*) Guillemain also lists an "I8" bust (#93 (R), #175 (Rς)), being: Laureate bust, left cuirassed, holding a pugio in the left hand and a Nicephore globe in the right. See: Jean Guillemain, La Monetazione di Probo a Roma (276-282), Ripostiglio della Venèra-Nuovo Catalogo Illustrato Vol III/1, 2009. No example of this bust has been published.

The variants (A and F5 bust) are a variant of RIC 161 because that is the only coin of the Rome mint with the obverse legend nr. 1 ('IMP C M AVR PROBVS AVG'), the reverse legend 'ADVENTVS PROBI AVG' and on the reverse Probus, on horse left, raising right hand and sceptre in left hand, with captive at foot.

According to both Guillemain and Pink, RIC 161 is part of the 2nd emission (exergue-/mint mark style: -/-//Rς; year 277) and 3rd emission (-/-//R✶ς; year 278). See Guillemain 2009 and Karl Pink, Der Aufbau der römischen Münzprägung in der Kaiserzeit VI/I, Wien, 1949, p. 55-56.

Pink only lists the 4th (RΔ, R✶Δ), 6th (R✶ς) 7th (R✶Z) officina and the mintmark 'R' without officina mark. As is clear by the examples listed on probuscoins, RIC 161 was not only minted during the 3rd emission by the 6th (R✶ς) and 7th (R✶Z) officina but also during the 2nd emission (6th: Rς; 7th: RZ). Guillemain also lists that RIC 161 was minted by the 3rd (RΓ) and 5th (RЄ) officina during the second emission, which for the 3rd (RΓ) is confirmed by an example on probuscoins (#664) and the example listed on Numista for the A bust.