His bike likely still has a CV carb which doesn't have a tickler. That's a feature exclusive to Amal carbs.
It's a Mikarb, which is a sort of clone of a Mikuni VM round slide 28mm.This is a throttle slide carb. Not CV.
Is this the motorcycle advertised on Craigslist at the moment for $33,000!!!!https://columbus.craigslist.org/mcy/4533444554.htmlRegards Charles