My guesses:

267 - Acorn nut - cheap variety.

268 - Bayonette?

269 - Small "propellor" or fan blade

270 - Edward Van Altena artwork... grin

Regards,
Joe Agro, Jr.
http://www.autodrill.com
http://www.multi-drill.com

V8013

My eBay: http://tinyurl.com/3n8gj