60s case 6202? And Imperial 56-88 questions

[Brian_in_indiana]

I got these two neat guys at a yard sale today and am trying to identify accurately. The case I think is a 6202 from '65_'69.
The imperial looks like '56-88 for years, can't find a model name or number.
They're both well loved users that need deep cleaning. So I have a couple projects. Hoping to know more about them.
Thanks!

https://imgur.com/a/VD4tBuE

 

[afishhunter]

Hollow bolster Imperial (lacks the backspring pivot pin, so has to be hollow bolster/shell construction) Jack is probably 56 to 88.
So far as I know, Imperial didn't put a model/pattern number/name on the shell/hollow bolster knives.

Someone who knows a lot more than me may know the pattern/model number.

The 1095 should sharpen up nicely.
My Imperials of that vintage work best with a 10 to 12 degree per side edge.
No edge rolling or chipping, and they hold an edge long enough to be useable.

GR8 finds

 

[Brian_in_indiana]

Awesome thanks! They both have a wonderful patina.... And the previous owner must have been a grease monkey, the schmutz that I cleaned out of them looked like oil off an engine block..... I tossed the case on my stones, still small chips but both got shaving sharp pretty quickly.