Cute little brass hammer

[Northwoods]

Got a little brass Matticks hammer today.

It's 8 1/2" long with a slender, tapered hickory handle impressed MATTICKS. 

The cylindrical head is 9/16" X 1 3/4"  It is stamped    MATTICKS 749  /  PLUS MFG. CO. INC.

Used for?

Haven't seen one like it on the web.  Matticks, I can find.  But PLUS?  Can't find it.

Any ideas?

[p_toad]

Don't know them, but a general google turned up nothing and a search on fleabay pulled up one:
"Vintage Matticks No 5 Nylon Faced Machinist Jeweler Hammer"   in GB?

https://www.ebay.com/itm/Vintage-Matticks-No-5-Nylon-Faced-Machinist-Jeweler-Hammer/273817382087?hash=item3fc0c9acc7:g:8jwAAOSwEX5cBBOd

[Northwoods]

Yeah, I found several of them on Google Image, but nothing small, delicate like mine.  Perhaps used for gunsmithing.  I can see a guy using it to tap out the sights on an old rifle in preparation before refinishing the barrel.

https://www.google.com/search?q=matticks+hammer&sxsrf=ACYBGNQE93L8RSBQ2BepCTCX1svJ5XMsAQ:1568346006800&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjHu_qU8MzkAhULX60KHdzVAw8Q_AUIFCgD&biw=1600&bih=755