Looks like this is just one board of a 2 board set
Big ribbon cable connector on side of board

Silkscreened on top of board	MTD-2
Sticker on top board		C-70

etched in copper on back of board	MTD-2
					SP2081 NM

.r1	hn462732	green sticker
.n1	hn462732	blue sticker
.m1	hn462732	yellow sticker
.k1	hn462732	red sticker	p5 written on it
.r2	hn462732	green sticker
.n2	hn462732	blue sticker
.m2	hn462732	yellow sticker
.g5	82s129		stamped with an A
.r3	mmi pal12l6	saved in jedec format

AY-3-8910 @ F2
Z80 @ J4





mameui32 version 0.129.u5
E:\hardware\EETools\roms>e:\games\mame\mameui32\mameui32 -romident e:\hardware\eetools\roms\mtd\roms\mtd.r1 
mtd.r1              NO MATCH

E:\hardware\EETools\roms>e:\games\mame\mameui32\mameui32 -romident e:\hardware\eetools\roms\mtd\roms\mtd.n1 
mtd.n1              NO MATCH

E:\hardware\EETools\roms>e:\games\mame\mameui32\mameui32 -romident e:\hardware\eetools\roms\mtd\roms\mtd.m1 
mtd.m1              = cc13j.bin             Crazy Climber (Japan)
                    = cc13j.bin             Crazy Climber (bootleg set 1)
                    = cc13j.bin             Crazy Climber (bootleg set 2)
                    = cc13j.bin             Crazy Kong Part II (set 1)
                    = cc13j.bin             Crazy Kong Part II (set 2)
                    = cc13j.bin             Crazy Kong Part II (Jeutel bootleg)
                    = cc13j.bin             Crazy Kong (Orca bootleg)
                    = cc13j.bin             Crazy Kong (Alca bootleg)
                    = cc13j.bin             Big Kong
                    = cc13j.bin             Monkey Donkey
                    = canballs.5s           Cannon Ball (bootleg on Crazy Climber hardware, set 1)
                    = cb6.bin               Cannon Ball (bootleg on Crazy Climber hardware, set 2)
                    = s05-14.bin            Crazy Kong Part II (alternative levels)

E:\hardware\EETools\roms>e:\games\mame\mameui32\mameui32 -romident e:\hardware\eetools\roms\mtd\roms\mtd.k1 
mtd.k1              = cc12j.bin             Crazy Climber (Japan)
                    = cc12j.bin             Crazy Climber (bootleg set 1)
                    = cc12j.bin             Crazy Climber (bootleg set 2)
                    = cc12j.bin             Crazy Kong Part II (set 1)
                    = cc12j.bin             Crazy Kong Part II (set 2)
                    = cc12j.bin             Crazy Kong Part II (Jeutel bootleg)
                    = cc12j.bin             Crazy Kong (Orca bootleg)
                    = cc12j.bin             Big Kong
                    = canballs.5p           Cannon Ball (bootleg on Crazy Climber hardware, set 1)
                    = cb5.bin               Cannon Ball (bootleg on Crazy Climber hardware, set 2)
                    = r05-13.bin            Crazy Kong Part II (alternative levels)

E:\hardware\EETools\roms>e:\games\mame\mameui32\mameui32 -romident e:\hardware\eetools\roms\mtd\roms\mtd.r2 
mtd.r2              NO MATCH

E:\hardware\EETools\roms>e:\games\mame\mameui32\mameui32 -romident e:\hardware\eetools\roms\mtd\roms\mtd.n2 
mtd.n2              NO MATCH

E:\hardware\EETools\roms>e:\games\mame\mameui32\mameui32 -romident e:\hardware\eetools\roms\mtd\roms\mtd.m2 
mtd.m2              NO MATCH