Raised numbers in a casting are always mold identifying marks and bear no relation to the final size, or even the weight except in a loose way. Size marks are punched, etched, scratched, or written on the part: there is no practical way to form raised letters on these small parts.
The marks pictured do not look like any factory mark I've come across. The factory marks I've seen are made with some sort of crayon apparently, how this survives years in hot oil I have no clue. Often they are so faded as to be unreadable.
I can't figure out what your marks might mean, either.
I suspect you have an engine that's been worked on a lot, so the markings are suspect. The case and crank marks should be right but possibly someone had the crank main journals polished which would obviate any markings.
Personally, first I would plastigauge all the bearings to see if new shells are actually needed.
If you do need to replace them, I would buy one pair of shells each in the size you guess are right for the main and rod bearings, then gauge all the bearings one at a time. Use your existing shells in the other mains to centre the crank as you go. Once you know the clearance on all the bearings using new unworn shells you can select and order the shells you need.
