First time poster here. I've made do for too long without a bench vise and finally found one a decent distance from my house on CL. In the pics it didn't look so big, but wow, it's huge! I can't find any info about it online, all I know is that it's a 5 inch, No. 450 MTECO Made in Japan. Anyone know anything about these vises and any insight on quality? Curious what era this is from and whether I should hold on to it or swap/sell for a smaller (3 3/4") vise that would better suit my needs.
Here's some pics:
Here's some pics: