I'm too new at this to say anything accurate on can value. We've managed to pick up three Trocos - one early large grease can with the swastika logo, a late grease can with the later logo, and a small little grease can with the later logo. We paid $60-$65 each for the big cans and $20 for the small but I've been told the swastika logo one usually goes for a lot more so we got lucky on it! The other guys on this thread should be able to give you a good idea of the value.
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Looking for Tulsa Oil Globes, any Tulsa-based cans, Troco anything, Bosch signs and clocks, original VW dealership stuff and original white capcos!