I can find no information about the SELPPA brand. The logo outline matches the Sherpa ice exe logo and the axe's design is nearly identical to Toma #365. This is compelling evidence for a SHERPA/SELPA relationship. I suspect that "SELPPA" was intended to be "SHERPA" but was transliterated improperly at first and then corrected on later axes.

↑ 462: Sherpa Selppa

• Made in Japan [1950s].
• 845x300 mm.
• Weight: 990 g.
• Wood Shaft.
• Shaft: 32x25 mm. (Grip: 30x24 mm.)
• Fixed Head.
• Straight adze with a curved edge and no arch.
• Adze: 80l)x55(w)x0(arch) mm.
• Straight alpine pick with a pointed tip.
• Pick: 160(l)x20(h)x9(t) mm.
• Square spike.
• Spike: 49(l)x11(w)x11(t) mm.
• Brass glide ring with adjustable sewn cloth strap. Brass collar secured by two screws.
• The tapered shaft that provides strength where it's needed most and gives the axe a solid swing when cutting steps.