Would you confuse a P.BLAS As for one of Sextus Pompeius Magnus Pius?

I bought 3 modest priced coins and a scale weight a few weeks ago. I really wanted the NB coin weight. Shipping and handling was 3 times the price of the weight, so I bid on a few other items to spread the shipping cost.
One lot was misattributed to Sextus Pompeius Magnus Pius, Cr 479/1. The coin is worn enough to remove some of the Moneyer's name. I could see what I thought was "LAI", but could not find an As with those letters. I found it in one of my favorite RR bronze sale catalogs: A Collection of Roman Republican Struck Bronze Coinage, Auction 3 by Italo Vecchi. Turns out what I thought was "I" was "S". Part of the "B" is visible also.


Roman Republic, P. Cornelius P. f. Blasio Æ As. Rome, 170-158 BC.
Obv - Laureate head of Janus, I above
Rev - Prow right , P.BLAS above, I before, ROMA below.
21.7 grams, 30.2 mm
F, dark brown patina, R
Crawford 189/01, wt std 27 g
BMCRR Rome 788, 789, 790
Syd 370
Sear 703
Vecchi #3 lots 343 & 344
RBW 806
Bab – Cornelia 6

My haul:


The weight I really wanted:

Byzantine Coin Weight, 2 Solidi / Nomismata; Obv: NB in wreath, Rev: Blank; 9 grams, 19.2 mm diameter