Thread: Help with age of vintage razors

Hello everyone!
Can someone help me with the AGE and "manufacturer" of these vintage razors..
1st razor is a "HIRA" 42 Slolingen - Finest silver steel Made in Germany
2nd razor is a ACMENSO - 75 - A.C. Menges Solingen

I know what Solingen is, but i can't find nothing about HIRA or A.C. Menges..
ALSO WHAT DOES THE NUMBER MEAN 42 and 75 .. is that the year? Like 1942 and 1975??

I would also like to know is silver steel really what it says ?? or maybe something else, because i have read somewhere that that isn't actual silver steel??

I am going to restore these two blades, and i am looking forward to doing it..
Any help would be much appreciated!

Thank you guys in advance and smooth shaves!
Stick