I definitely have several that fall into that category but then I like serial numbers
My 45 Long Colt Mountain Gun is 1111 not counting the alpha prefix
Not counting the alpha prefix, I have a Model 66 snub nose whose serial number is 0000, so that one will read the same upside down.
I have a Kek Tec P3AT that has 000 as the numeric portion of the serial number. Sorry, I don't have either of these photographed
My 41 Magnum Marlin Custom Cowboy Limited lever action is actually a Palindromic number, not a Strobogrammatic, that is if you leave the alpha "CCL" out of it. The number is 00300
My 45ACP HK USP45 is numbered 609. This is the USP in the upper left hand corner of this old family photo. I purchased it the first week they were available
My Model 36 Texas Hold'em is another Palindromic number, 727
My First Edition Double Eagle is also Palindromic number, 747. The Double Eagles owned by my father and his ex wife are serial numbered 727 and 737. I purchased all three brand new back in 1992 and liked the Boeing theme
There are multiple others. Like I said I have a thing for serial numbers