To my surprise, there's only one observation in my log for this beautiful group, that's not just a Hickson, but a Rose, a KTG, a Holmberg and a Vorontsov-Vel'yaminov group, too. It's also part of the galaxy cluster WBL 385 that includes a fifth galaxy: MCG+05-29-030, 11' to the west-southwest. Surprisingly, NGC4173 is listed a being part of that cluster, too, even though its redshift is quite a bit off. And if that's not enough, the group is also part of 17 member Lyon Galaxy Group 279, the "NGC4274 Group"; the namesake galaxy for that bunch is 1.7° to the east-northeast.
Truth be told, the historically first designation for this group really ought to be Rose 10; even Hickson pointed to it in his catalog notes. But it just happens that the Hickson list is much better known.
Hickson 61-1.jpg Hickson 61-2.jpg Hickson 61-3.jpg
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My one observation was just before midnight on 27 April 2022 in the French Ardennes - 14" SCT @168x / 29':
All four galaxies are visible, a nice view.
A - NGC4169 is a NNW-SSE elongated glow, quite suddenly brighter in a relatively small core that is elongated in the same direction with a bright nucleus that is clearly visible without AV.
B - NGC4173 is a faint but clearly NE-SW extremely elongated streak, with AV brightest in the NW part.
C - NGC4175 is in line with B - NGC4173, a NW-SE elongated glow, with AV more elongated and with AV a faint central bulge is discernible that is slightly elongated in the same direction (almost round). No nucleus visible.
D - NGC4174 is a NE-SW elongated glow, the smallest galaxy of the group, brighter than C - NGC4175 is but fainter than A - NGC4169 is, quite suddenly brighter in a core that is elongated in the same direction, without AV the bright nucleus is visible.
I rated it 8/10.