All About Pocket Knives

here are a few i found in a roll i think they are some of the older? knives the first one is a clauss cant make out much else but has a 74 on the back of the main blade.
the second on is a solingen cutlery b.svoboda germany
the third is a cornwall knife works conn.
the last two the one with the long bosters is a clark bros. sheffield
the other on says solingen and has this sybmol on the front and robert klass germany on back i know robert klass is kissing crane so i guess this is a older kissing crane?

The Clauss is a contract made knife. Clauss has been discussed on AAPK several times recently. Most of their knives were contracted by Case, however some knives made by Queen have shown up for discussion recently.

Your knife actually looks to me like a Utica contract. The rough black handles don't appear to be Case made and the nail nick on the master (well out toward the end of the blade) looks like a typical Utica manufacture. It does appear to be a pre WWII or possibly just post WWII knife.

Sweet knives!

Could that rough black be pocket worn?