I believe Paul Seilheimer marked bayonets have been observed showing a total of 3 maker marks, the dog with sword, the sword with martini glass & the PS initials in a circle with the last one being the only mark I've seen on a fire bayonet. Who knows, they may be out there though. Seilheimer marked fire bayonets are relatively scarce although they do pop up on dealer sites & occasionally on Eban so they're out there. This one came from Eban way back when. Fisher's guide shows pics of all three & states that Seilheimer closed it's doors in 1970.

This mark is on the reverse ricasso of a long model with nonmagnetic pommel.

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