Metal silver coloured medal

Silver coloured metal medal. I Don’t know if it's made of sterling silver.
habilete moralite bekwaamheid zedelijkheid.
I have had a quick google & found out the following info. I do not know if it is accurate.
Belgian 25 Year labour award medal - 2nd Class
The Belgian labour award medal (Decoration du Travail) was instituted in 1847 and awarded to citizens for 25 years of meritorious work in industry. These labour medals were redesigned in 1958.
2nd class for 25 years labour service – silvered crown and plain ribbon.
But please do your own research.
The ribbon has a rust mark.
Please see the photos.
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