Never heard of a PB 38
Impossible to answer without a detailed description.
50-500 depending on specifics
You are probably referring to a 7.65 Parabellum cartridge. See the Wikipedia link below.
If you need an answer please state the current condition of the pistol. Is it in Poor, Fair, Good, Very Good or Excellent condition?
I have a P. BERETTA-CAL. 7.65-BREVET-SARDONE V.T. with a 1947 datestamp just to the right of the left grip, which has a stylized PB on the lower part of the left & right grip. The serial number is 661415. Two weeks ago a gun dealer in Florida said the gun is probably worth about $475 because it is in great condition and probably a collector's item.
Impossible to render an evaluation guess without a detailed description
according to the below website; http://ie.lbl.gov/education/parent/Pb_iso.htm there are 48 isotopes of lead, but if u listen to wikipedia (not a trustworthy source) there are only 38. hope i helped, a year 11 chemisty student
Cellery and PB PB & Jelly Chocolate and PB
In the Penetrant PB B'laster, the PB stands for Penetrating B'laster.
because if you were to write PB then it would be a compound not a single element while Pb is lead.
Pb is a compound.
Pb , derived from Plumbum.