1927 Vintage Snap On Socket Wrench for Buick

[snaponfords]

I finally figured out what this wrench was, its for a 1927 or 1928 Buick Standard Six front and rear engine bolts
Referenced this:
http://www.collectingsnapon.com/index.p ... he%201920s

My question is why doesn't this example have "Snap On" on it? It has "7" for 1927 and "2504". Could it be a early example omitting the "Snap On" stamp or a prototype or a standard kit provided with the Buick car back in 1927/1928? Since it doesn't have the snap on stamp, would it be worth more or less or the same?

Thanks

[Oldtuleguy]

The 27 catalog shows it with the snap on stamp. I would speculate it is a rare missed stamp.

[rdwaaw]

Stamp would be close to the grip. Many have a light stamp making them hard to read. Also, easily worn off. Some also say chrome vanadium.

[Oldtuleguy]

This one the snap on is stamped in the middle, and the sn of snap on is worn almost off. It may be yours was stamped I bit light, and is now gone.

[snaponfords]

I looked closer to the handle, its just a faint outline so it was stamped lightly.