The 'mystery' 125 can be found at 8.12179 34.91928, but you have to use the Historical Imagery function. This will show you a newer image, but of poorer quality.
This is getting too complicated. You cannot see PAMA at Recife from where the Main Gate to the airfield. PAMA is at the opposite end of the airfield. As noted above 2121 is preserved about 200m from the B-17 and EMB-326. Is this the one you saw? We spent some time viewing the area around PAMA and th...
We also saw '2011' at Recife on 9/11/2013. On the same day we saw 2118 at the HQ to the south of the airport and 2121 near the Main Gate on the military side at Recife.