Yes. He lists 7 (1188-1193a) with this reverse type differentiated by bust types, facing orientation, and obverse legends. For 1192, your obverse legend, bust orientation and type, E is in the left field. The listing is not in error either (as it sometimes is), as the illustrated coin shows exactly what is described.
Nice job, @DonnaML Going it alone... RI Diadumenian 217-218 AE26 Nicopolis ad Istrum Homonoia MACRINUS AND DIADUMENIAN: RI Didumenian and Macrinus 217-218 CE AE28 Markianopolis mint Serapis
I'd say your first coin mishap ended up working out well. Your second choice is a great looking coin. Also, nice demonstration of "where the dimple came from - die v. flan" - your die matches look good to me. Here's another coin with Pontianus as legate: Moesia Inferior, Marcianopolis, Macrinus with Diadumenian as Caesar, AD 217-218, Æ Pentassarion, Pontianus, consular legate Obv: AVT K ΟΠEΛ CEVH MAKPEINOC K M ΟΠE ANTΩNEINOC, confronted heads of Macrinus right, laureate, and Diadumenian left, bareheaded Rev: VΠ ΠONTIANOV MAPKIANOΠOΛEITΩN, Hera standing facing, head left, holding phiale and scepter; E (mark of value) to left Ref: AMNG I 722 var. (E to right plus flaming altar); Varbanov 1185a var. (E to right plus altar) Note: CNG coin from same dies "currently unique variety with mark of value to left of Hera and no altar"
Fascinating. I don't actually like the CNG coin that much, what with Macrinus's nose being completely obliterated by the dimple!